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Representative Survey (representative + survey)
Selected AbstractsMental disorders as risk factors for substance use, abuse and dependence: results from the 10-year follow-up of the National Comorbidity SurveyADDICTION, Issue 6 2010Joel Swendsen ABSTRACT Aims The comorbidity of mental disorders and substance dependence is well documented, but prospective investigations in community samples are rare. This investigation examines the role of primary mental disorders as risk factors for the later onset of nicotine, alcohol and illicit drug use, abuse and dependence with abuse. Design The National Comorbidity Survey (NCS) was a nationally representative survey of mental and substance disorders in the United States carried out in 1990,92. The NCS-2 re-interviewed a probability subsample of NCS respondents in 2001,03, a decade after the baseline survey. Participants A total of 5001 NCS respondents were re-interviewed in the NCS-2 (87.6% of baseline sample). Results Aggregate analyses demonstrated significant prospective risks posed by baseline mental disorders for the onset of nicotine, alcohol and illicit drug dependence with abuse over the follow-up period. Particularly strong and consistent associations were observed for behavioral disorders and previous substance use conditions, as well as for certain mood and anxiety disorders. Conditional analyses demonstrated that many observed associations were limited to specific categories of use, abuse or dependence, including several mental disorders that were non-significant predictors in the aggregate analyses. Conclusions Many mental disorders are associated with an increased risk of later substance use conditions, but important differences in these associations are observed across the categories of use, abuse and dependence with abuse. These prospective findings have implications for the precision of prevention and treatment strategies targeting substance use disorders. [source] Socio-demographic risk factors for alcohol and drug dependence: the 10-year follow-up of the national comorbidity surveyADDICTION, Issue 8 2009Joel Swendsen ABSTRACT Aims Continued progress in etiological research and prevention science requires more precise information concerning the specific stages at which socio-demographic variables are implicated most strongly in transition from initial substance use to dependence. The present study examines prospective associations between socio-demographic variables and the subsequent onset of alcohol and drug dependence using data from the National Comorbidity Survey (NCS) and the NCS Follow-up survey (NCS-2). Design The NCS was a nationally representative survey of the prevalence and correlates of DSM-III-R mental and substance disorders in the United States carried out in 1990,2002. The NCS-2 re-interviewed a probability subsample of NCS respondents a decade after the baseline survey. Baseline NCS socio-demographic characteristics and substance use history were examined as predictors of the first onset of DSM-IV alcohol and drug dependence in the NCS-2. Participants A total of 5001 NCS respondents were re-interviewed in the NCS-2 (87.6% of baseline sample). Findings Aggregate analyses demonstrated significant associations between some baseline socio-demographic variables (young age, low education, non-white ethnicity, occupational status) but not others (sex, number of children, residential area) and the subsequent onset of DSM-IV alcohol or drug dependence. However, conditional models showed that these risk factors were limited to specific stages of baseline use. Moreover, many socio-demographic variables that were not significant in the aggregate analyses were significant predictors of dependence when examined by stage of use. Conclusions The findings underscore the potential for socio-demographic risk factors to have highly specific associations with different stages of the substance use trajectory. [source] Reduction of quantity smoked predicts future cessation among older smokersADDICTION, Issue 1 2004Tracy Falba ABSTRACT Aim To examine whether smokers who reduce their quantity of cigarettes smoked between two periods are more or less likely to quit subsequently. Study design Data come from the Health and Retirement Study, a nationally representative survey of older Americans aged 51,61 in 1991 followed every 2 years from 1992 to 1998. The 2064 participants smoking at baseline and the first follow-up comprise the main sample. Measurements Smoking cessation by 1996 is examined as the primary outcome. A secondary outcome is relapse by 1998. Spontaneous changes in smoking quantity between the first two waves make up the key predictor variables. Control variables include gender, age, education, race, marital status, alcohol use, psychiatric problems, acute or chronic health problems and smoking quantity. Findings Large (over 50%) and even moderate (25,50%) reductions in quantity smoked between 1992 and 1994 predict prospectively increased likelihood of cessation in 1996 compared to no change in quantity (OR 2.96, P < 0.001 and OR 1.61, P < 0.01, respectively). Additionally, those who reduced and then quit were somewhat less likely to relapse by 1998 than those who did not reduce in the 2 years prior to quitting. Conclusions Reducing successfully the quantity of cigarettes smoked appears to have a beneficial effect on future cessation likelihood, even after controlling for initial smoking level and other variables known to impact smoking cessation. These results indicate that the harm reduction strategy of reduced smoking warrants further study. [source] Most smokeless tobacco use is not a causal gateway to cigarettes: using order of product use to evaluate causation in a national US sampleADDICTION, Issue 8 2003Lynn T. Kozlowski ABSTRACT Aims, To evaluate non-causal and causal patterns of smokeless tobacco (SLT) and cigarette use; to assess the prevalence of ,non-gateway' and possible ,gateway' patterns of SLT use. Design and setting, Data from the Cancer Control Supplement to the 1987 National Health Interview Survey, a representative survey of non-institutionalized adults in the United States. From reported age at first use, participants were categorized by type and sequence of tobacco product use. SUDAAN 8.0.1 was used for statistical analyses. Participants, Males aged 18,34 (n = 3454), weighted to provide estimates of the US population. A subsample of males aged 23,34 (n = 2614) was analyzed to minimize the possibility of future product switching. Measurements, Smoking status, smokeless tobacco (snuff, chewing tobacco, both) use status, age at regular use of cigarettes, age at first use of smokeless tobacco. Findings, Of those 23,34-year-olds who had ever used SLT with or without cigarettes, 77.2% (95% CI: 71.3, 83.3) were classifiable as non-gateway users in that 35.0% (95% CI: 29.9, 40.1) had only used SLT and 42.2% (95% CI: 36.8, 47.7) had used cigarettes first. Cigarette use in younger cohorts was less common, despite increased SLT use. Those who used cigarettes before moist snuff were 2.1 times more likely to have quit smoking (95% CI 1.21,6.39) than cigarette-only users. Conclusions, The large majority of SLT users are non-gateway users. Causal gateway effects should be of minor concern for policy. SLT may be more likely to prevent smoking than cause it. [source] Underage alcohol use, delinquency, and criminal activityHEALTH ECONOMICS, Issue 12 2006Michael T. French Abstract Since 1988, the minimum legal drinking age (MLDA) has been 21 years for all 50 US states. The increasing prevalence of teenagers driving under the influence (DUI) of alcohol and the resulting traffic accidents were two main reasons for raising the MLDA to 21 years. Following the passage of this legislation, several published studies have found that the higher MLDA is associated with a significant reduction in both fatal and non-fatal accidents. While the relationship between MLDA and DUI events among young adults has been extensively studied, less information is available on other potential consequences of underage drinking. The present study uses data from the National Epidemiologic Survey on Alcohol and Related Conditions (NESARC), a recent nationally representative survey, to investigate the effects of underage drinking on a variety of delinquency and criminal activity consequences. After controlling for the endogeneity of alcohol use where appropriate, we find strong evidence that various measures of alcohol consumption are related both to delinquency and to criminal activity. However, the findings are not uniform across gender as we find striking differences between males and females. These results have interesting policy and public health implications regarding underage drinking. Copyright © 2006 John Wiley & Sons, Ltd. [source] The Influence of Regular Work Systems on Compensation for Contingent WorkersINDUSTRIAL RELATIONS, Issue 4 2003Article first published online: 16 SEP 200, Brenda A. Lautsch Using data from a nationally representative survey of U.S. establishments, this article explores how features of regular work influence outcomes for contingent workers. The results show that firms combine regular and contingent work in varied ways: Some managers design contingent work to achieve performance objectives not possible with the regular workforce, whereas managers in other cases create contingent jobs to reinforce the same goals as regular work. In the latter case, contingent workers are more likely to be integrated with regular workers and to receive benefits. Benefit provision for contingent workers is also influenced by traditional internal labor market rules and by spillover effects in which efficiency or regulatory requirements lead benefits to be extended to contingent staff once offered to regular workers. [source] Food consumption and political agency: on concerns and practices among Danish consumersINTERNATIONAL JOURNAL OF CONSUMER STUDIES, Issue 6 2008Bente Halkier Abstract Increasingly ordinary individual consumers are expected to perform some kind of societal or political agency. In the debates about political consumption it is a recurrent topic to what degree consumption practices can be seen as political practices and how many consumers perform such practices. The aim of this article is to empirically qualify the demarcation of the political in individual consumer activities by integrating the concept of political agency in the definition of political consumption. On the basis of empirical results from a representative survey among food consumers in Denmark, the article suggests that by supplementing the criteria of consumers performing specific consumption activities with a criteria of consumers expressing political agency, a more precise empirical delimitation of political consumption can be achieved. Three groups of food consumers are identified: those who perform political consumption practices; those who perform politicized consumption practices; and those who vocalize the discourse of political consumerism. [source] Attention deficit hyperactivity disorder: concordance of the adolescent version of the Composite International Diagnostic Interview Version 3.0 (CIDI) with the K-SADS in the US National Comorbidity Survey Replication Adolescent (NCS-A) supplementINTERNATIONAL JOURNAL OF METHODS IN PSYCHIATRIC RESEARCH, Issue 1 2010Jennifer Greif Green Abstract This paper evaluates the internal consistency reliability and concurrent validity of the assessment of Diagnostic and Statistical Manual of Mental Disorders (DSM-IV) attention deficit hyperactivity disorder (ADHD) in the adolescent version of the World Health Organization (WHO) Composite International Diagnostic Interview Version 3.0 (CIDI). The CIDI is a lay-administered diagnostic interview that was carried out in conjunction with the US National Comorbidity Survey Adolescent Supplement, a US nationally representative survey of 10,148 adolescents and their parents. Internal consistency reliability was evaluated using factor and item response theory analyses. Concurrent validity was evaluated against diagnoses based on blinded clinician-administered interviews. Inattention and hyperactivity-impulsivity items loaded on separate but correlated factors, with hyperactivity and impulsivity items forming a single factor in parent reports but separate factors in youth reports. We were able to differentiate hyperactivity and impulsivity factors for parents as well by eliminating a subset who endorsed zero ADHD items from the factor analysis. Although concurrent validity was relatively weak, decomposition showed that this was due to low validity of adolescent reports. A modified CIDI diagnosis based exclusively on parent reports generated a diagnosis that had good concordance with clinical diagnoses [area under the curve (AUC) = 0.78]. Implications for assessing ADHD using the CIDI and the effect of different informants on measurement are discussed. Copyright © 2010 John Wiley & Sons, Ltd. [source] Barriers for dental treatment of primary teeth in East and West GermanyINTERNATIONAL JOURNAL OF PAEDIATRIC DENTISTRY, Issue 2 2009CHRISTIAN H. SPLIETH Background., In many countries, restorative treatment in primary teeth is suboptimal. Aim., Thus, this study tried to detect barriers for dentists to restore primary teeth in kindergarten children (3,6 years). Design., For a representative survey, 320 dentists (184 West, 136 East Germany) were randomly selected from the dental associations' registers and asked to answer a questionnaire on their profile, their view of the National Health System, and possible barriers for restoring primary teeth. Results., The analysis (response rate 57.7%) showed that the parents were no barrier and the dentists felt the need of restoring primary teeth. In addition to the children's anxiety, the inadequate reimbursement for fillings were perceived as clear barrier. The comparison of West and East German dentists detected statistically significantly higher barriers in West Germany, where , in contrast to the German Democratic Republic , no structured training in paediatric dentistry was compulsory before unification. Only 35% of the East German dentists rated restorative treatment in 3- to 6-year-olds as stressful in contrast to 65% in West Germany, where especially male dentists found no time to treat children. Conclusion., This study reveals that dentists can also be a considerable barrier to restorative treatment in small children, especially without adequate training in dental schools. [source] Social protection and poverty in Azerbaijan, a low-income country in transition: Implications of a household surveyINTERNATIONAL SOCIAL SECURITY REVIEW, Issue 4 2007Nazim Habibov Using a nationally representative survey, this study examines the performance of social protection in Azerbaijan from the perspective of poverty reduction. Empirical evidence presented suggests that social protection programmes have an important impact on poverty alleviation. However, poverty is still widespread. The findings demonstrate that the current system of social protection has several important limitations. First, a significant proportion of the poor population is not covered by the social protection system. Second, the poor typically receive a smaller share of total benefits than the non-poor. Finally, most social transfers are too small to lift households out of poverty. The current system of social protection in Azerbaijan requires further strengthening. In particular, the government should develop and implement new social assistance programmes specifically directed towards poverty reduction. [source] Food Scares and Trust: A European StudyJOURNAL OF AGRICULTURAL ECONOMICS, Issue 1 2008Mario Mazzocchi Abstract The complex interactions between the determinants of food purchase under risk are explored using the SPARTA model, based on the theory of planned behaviour, and estimated through a combination of multivariate statistical techniques. The application investigates chicken consumption choices in two scenarios: (a) a ,standard' purchasing situation; and (b) following a hypothetical Salmonella scare. The data are from a nationally representative survey of 2,725 respondents from five European countries: France, Germany, Italy, the Netherlands and the United Kingdom. Results show that the effects and interactions of behavioural determinants vary significantly within Europe. Only in the case of a food scare do risk perceptions and trust come into play. The policy priority should be on building and maintaining trust in food and health authorities and research institutions, while food chain actors could mitigate the consequences of a food scare through public trust. No relationship is found between socio-demographic variables and consumer trust in food safety information. [source] Length of Stay for Older Adults Residing in Nursing Homes at the End of LifeJOURNAL OF AMERICAN GERIATRICS SOCIETY, Issue 9 2010Anne Kelly MSW OBJECTIVES: To describe lengths of stay of nursing home decedents. DESIGN: Retrospective cohort study. SETTING: The Health and Retirement Study (HRS), a nationally representative survey of U.S. adults aged 50 and older. PARTICIPANTS: One thousand eight hundred seventeen nursing home residents who died between 1992 and 2006. MEASUREMENTS: The primary outcome was length of stay, defined as the number of months between nursing home admission and date of death. Covariates were demographic, social, and clinical factors drawn from the HRS interview conducted closest to the date of nursing home admission. RESULTS: The mean age of decedents was 83.3±9.0; 59.1% were female, and 81.5% were white. Median and mean length of stay before death were 5 months (interquartile range 1,20) and 13.7±18.4 months, respectively. Fifty-three percent died within 6 months of placement. Large differences in median length of stay were observed according to sex (men, 3 months vs women, 8 months) and net worth (highest quartile, 3 months vs lowest quartile, 9 months) (all P<.001). These differences persisted after adjustment for age, sex, marital status, net worth, geographic region, and diagnosed chronic conditions (cancer, hypertension, diabetes mellitus, lung disease, heart disease, and stroke). CONCLUSION: Nursing home lengths of stay are brief for the majority of decedents. Lengths of stay varied markedly according to factors related to social support. [source] Evaluation of Nationally Mandated Drug Use Reviews to Improve Patient Safety in Nursing Homes: A Natural ExperimentJOURNAL OF AMERICAN GERIATRICS SOCIETY, Issue 6 2005Becky Briesacher PhD Objectives: To test whether nationally required drug use reviews reduce exposure to inappropriate medications in nursing homes. Design: Quasi-experimental, longitudinal study. Setting: Data source is the 1997,2000 Medicare Current Beneficiary Survey, a nationally representative survey of Medicare beneficiaries. Participants: Nationally representative population sample of 8 million nursing home (NH) residents (unweighted n=2,242) and a comparative group of 2 million assisted living facility (ALF) residents (unweighted n=664). Measurements: Prevalence and incident use of 38 potentially inappropriate medications compared before and after the policy: 32 restricted for all NH residents and six for residents with certain conditions. Inappropriate medications were stratified by potential for legitimate exceptions: always avoid, rarely appropriate, or some acceptable indications. Results: In July 1999, the Centers for Medicare and Medicaid Services (CMS) mandated expansions to the drug use review policy for nursing home certification. Using explicit criteria, surveyors and consultant pharmacists must evaluate resident records for potentially inappropriate medication exposures and related adverse drug reactions. Nursing homes in noncompliance may receive citations for deficient care. Before the CMS policy, 28.8% (95% confidence interval (CI)=27.3,30.3) of Medicare beneficiaries in NHs and 22.4% (95% CI=19.8,25.0) in ALFs received potentially inappropriate medications. Nearly all prepolicy use came from medications with some acceptable indications: 23.4% in NHs (95% CI=20.4,26.4) and 18.0% in ALFs (95% CI=15.6,20.4). After the policy, exposures in NHs declined to 25.6% (95% CI=24.1,27.1, P<.05), but similar declines occurred in ALFs (19.0%, 95% CI=16.7,21.3, nonsignificant). Postpolicy use of inappropriate medications with exempted indications remained high, and more than half was incident use: 20.6% of NH residents (95% CI=19.0,22.0) and 15.6% of ALF residents (95% CI=15.2,15.7). Use of drugs that are restricted with certain diseases increased 33% in NHs between 1997 and 2000 (from 9.3% to 13.2%; P<.05). Multivariate results detected no postpolicy differences in inappropriate drug use between long-term care facilities with mandatory drug use reviews and those without. Conclusion: Some postpolicy declines were noted in NH use of potentially inappropriate medications, but the decrease was uneven and could not be attributed to the national drug use reviews. This study is the first evaluation of the CMS policy, and it highlights the unclear effectiveness of drug use reviews to improve patient safety in NHs even though state and federal agencies have widely adopted this strategy. [source] Informal Caregiving Time and Costs for Urinary Incontinence in Older Individuals in the United StatesJOURNAL OF AMERICAN GERIATRICS SOCIETY, Issue 4 2002Kenneth M. Langa MD OBJECTIVES: To obtain nationally representative estimates of the additional time, and related cost, of informal caregiving associated with urinary incontinence in older individuals. DESIGN: Multivariate regression models using data from the 1993 Asset and Health Dynamics Study, a nationally representative survey of people aged 70 and older (N = 7,443). SETTING: Community-dwelling older people. PARTICIPANTS: National population-based sample of community-dwelling older people. MEASUREMENTS: Weekly hours of informal caregiving, and imputed cost of caregiver time, for community-dwelling older people who reported (1) no unintended urine loss, (2) incontinence that did not require the use of absorbent pads, and (3) incontinence that required the use of absorbent pads. RESULTS: Thirteen percent of men and 24% of women reported incontinence. After adjusting for sociodemographics, living situation, and comorbidities, continent men received 7.4 hours per week of care, incontinent men who did not use pads received 11.3 hours, and incontinent men who used pads received 16.6 hours (P < .001). Women in these groups received 5.9, 7.6, and 10.7 hours (P < .001), respectively. The additional yearly cost of informal care associated with incontinence was $1,700 and $4,000 for incontinent men who did not and did use pads, respectively, whereas, for women in these groups, the additional yearly cost was $700 and $2,000. Overall, this represents a national annual cost of more than $6 billion for incontinence-related informal care. CONCLUSIONS: The quantity of informal caregiving for older people with incontinence and its associated economic cost are substantial. Future analyses of the costs of incontinence, and the cost-effectiveness of interventions to prevent or treat incontinence, should consider the significant informal caregiving costs associated with this condition. [source] Implementation of NIAAA College Drinking Task Force Recommendations: How Are Colleges Doing 6 Years Later?ALCOHOLISM, Issue 10 2010Toben F. Nelson Background:, In 2002, the National Institute on Alcohol Abuse and Alcoholism (NIAAA) College Drinking Task Force issued recommendations to reduce heavy drinking by college students, but little is known about implementation of these recommendations. Current discussion about best strategies to reduce student drinking has focused more on lowering the minimum legal drinking age as advocated by a group of college and university presidents called the Amethyst Initiative than the NIAAA recommendations. Methods:, A nationally representative survey of administrators was conducted at 351 4-year colleges in the United States to ascertain familiarity with and progress toward implementation of NIAAA recommendations. Implementation was compared by enrollment size, public or private status, and whether the school president signed the Amethyst Initiative. Results:, Administrators at most colleges were familiar with NIAAA recommendations, although more than 1 in 5 (22%) were not. Nearly all colleges use educational programs to address student drinking (98%). Half the colleges (50%) offered intervention programs with documented efficacy for students at high risk for alcohol problems. Few colleges reported that empirically supported, community-based alcohol control strategies including conducting compliance checks to monitor illegal alcohol sales (33%), instituting mandatory responsible beverage service (RBS) training (15%), restricting alcohol outlet density (7%), or increasing the price of alcohol (2%) were operating in their community. Less than half the colleges with RBS training and compliance checks in their communities actively participated in these interventions. Large colleges were more likely to have RBS training and compliance checks, but no differences in implementation were found across public/private status or whether the college president signed the Amethyst Initiative. Conclusions:, Many colleges offer empirically supported programs for high-risk drinkers, but few have implemented other strategies recommended by NIAAA to address student drinking. Opportunities exist to reduce student drinking through implementation of existing, empirically based strategies. [source] Racial Reconciliation in South Africa:Interracial Contact and Changes over TimeJOURNAL OF SOCIAL ISSUES, Issue 2 2010James L. Gibson Relying upon,Gibson's (2004),theory equating lack of prejudice with interracial "reconciliation," we investigate racial attitudes based on a 2004 nationally representative survey of South Africans. We begin by documenting substantial group-based differences in intergroup prejudice, with Blacks being considerably less reconciled with Whites as compared to the three racial minorities' levels of reconciliation with Blacks. We also discover that the Black majority has become less reconciled with Whites over the period from Gibson's survey (in 2001) to the current survey (in 2004). Improvement in racial attitudes is observed among the other three groups. We next investigate intergroup contact as an explanation of differences in attitudes, finding some effects of mere contact and powerful effects of intimate contact. However, the consequences of contact differ across the various racial groups. [source] The SAURON project , VIII.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, Issue 3 2006OASIS/CFHT integral-field spectroscopy of elliptical, lenticular galaxy centres ABSTRACT We present high spatial resolution integral-field spectroscopy of 28 elliptical (E) and lenticular (S0) galaxies from the SAURON representative survey obtained with the OASIS spectrograph during its operation at the Canada,France,Hawaii Telescope. These seeing-limited observations explore the central 8 × 10 arcsec2 (typically 1 kpc diameter) regions of these galaxies using a spatial sampling four times higher than SAURON (0.27-arcsec versus 0.94-arcsec spatial elements), resulting in almost a factor of 2 improvement in the median point spread function. These data allow accurate study of the central regions to complement the large-scale view provided by SAURON. Here we present the stellar and gas kinematics, stellar absorption-line strengths and nebular emission-line strengths for this sample. We also characterize the stellar velocity maps using the ,kinemetry' technique, and derive maps of the luminosity-weighted stellar age, metallicity and abundance ratio via stellar population models. We give a brief review of the structures found in our maps, linking also to larger-scale structures measured with SAURON. We present two previously unreported kinematically decoupled components (KDCs) in the centres of NGC 3032 and NGC 4382. We compare the intrinsic size and luminosity-weighted stellar age of all the visible KDCs in the full SAURON sample, and find two types of components: kiloparsec-scale KDCs, which are older than 8 Gyr, and are found in galaxies with little net rotation; and compact KDCs, which have intrinsic diameters of less than a few hundred parsec, show a range of stellar ages from 0.5 to 15 Gyr (with 5/6 younger than 5 Gyr), are found exclusively in fast-rotating galaxies, and are close to counter-rotating around the same axis as their host. Of the seven galaxies in the SAURON sample with integrated luminosity-weighted ages less than 5 Gyr, five show such compact KDCs, suggesting a link between counter-rotation and recent star formation. We show that this may be due to a combination of small sample size at young ages, and an observational bias, since young KDCs are easier to detect than their older and/or corotating counterparts. [source] Pregnancy Intention and Preterm Birth: Differential Associations Among a Diverse Population of WomenPERSPECTIVES ON SEXUAL AND REPRODUCTIVE HEALTH, Issue 2 2008Aimee Afable-Munsuz CONTEXT:,Studies published to date provide mixed evidence on the relationship between unintended pregnancy and preterm birth, and none take into consideration that the meaning of unintended pregnancy may vary across racial and ethnic groups. METHODS:,Data from the 1999,2003 rounds of the Maternal and Infant Health Assessment, a population-based, representative survey of postpartum women in California, were used to assess the relationship between pregnancy intention and preterm birth. For racial and ethnic groups in which an association was found, sequential logistic regression was conducted to further examine the relationship while controlling for socioeconomic characteristics. RESULTS:,In unadjusted results, pregnancy intention was associated with preterm birth among both whites and immigrant Latinas, but not among blacks or U.S.-born Latinas. Among whites, compared with women who reported that their pregnancy was intended, those who were unsure about their pregnancy had elevated odds of preterm birth (odds ratio, 1.4), as did those who reported their pregnancy was unwanted (1.7) or mistimed (1.4). Among immigrant Latinas, those who reported being unsure about their pregnancy were at higher risk of preterm birth than were those who reported an intended pregnancy (1.6). After adjustment for socioeconomic factors, the association remained significant for immigrant Latinas who were unsure about their pregnancy (1.5), but none of the associations remained significant for whites. CONCLUSIONS:,Women's interpretations of questions about pregnancy intention and their social experiences regarding pregnancy intention may vary by race or ethnicity. Studies on the association between pregnancy intention and preterm birth may need to be group-specific. [source] Breastfeeding as obesity prevention in the United States: A sibling difference modelAMERICAN JOURNAL OF HUMAN BIOLOGY, Issue 3 2010Molly W. Metzger In light of the growing prevalence of obesity in the United States, and the health risks associated with childhood obesity in particular, it is critical to identify avenues for obesity prevention. This study tests the hypothesis that breastfeeding serves as one protective factor against children's subsequent development of obesity. We used linear-, logistic-, and sibling fixed-effects regression models to evaluate the association between infant feeding history and body mass index (BMI) in late childhood or adolescence (9,19 years, mean = 14 years). Complete data were available for 976 participants (488 sibling pairs) in the 2002 Child Development Supplement of the Panel Study of Income Dynamics, a nationally representative survey of families in the United States. In sibling pairs in which only one sibling was breastfed, the breastfed sibling had an adolescent BMI that was 0.39 standard deviations lower than his or her sibling, controlling for child-specific factors that may have influenced parents' feeding decisions. This effect is equivalent to a difference of more than 13 pounds for a 14-year-old child of average height. Furthermore, fixed-effects logistic regressions predicting overweight and obese status showed that breastfed siblings were less likely to reach those BMI thresholds. We therefore conclude that breastfeeding in infancy may be an important protective factor against the development of obesity in the United States. The application of a sibling fixed-effects model provides stronger evidence of a causal relationship than prior research reporting similar patterns of association. Am. J. Hum. Biol. 2010. © 2009 Wiley-Liss, Inc. [source] Women's fertility and mortality in late mid life: A comparison of three contemporary populationsAMERICAN JOURNAL OF HUMAN BIOLOGY, Issue 4 2009Emily Grundy Evolutionary theory suggests a trade-off between reproduction and somatic maintenance implying a negative relationship between parity and longevity, at least in natural fertility populations. In populations in which fertility control is usual, there are also a number of mechanisms that may link reproductive careers and later mortality, but evidence of associations between women's fertility patterns and their later life health has been judged inconclusive due to varying controls for socio-economic characteristics and marital status. Here, we build on three recent studies that followed a common framework to investigate associations between women's parity and timing of first and last birth with mortality in late middle age in three contemporary developed counties, Norway, England and Wales, and the USA. Data were drawn from whole population registers (Norway); a large census-based record linkage study (England and Wales), and a nationally representative survey linked to death records (USA). Results show that teenage childbirth was associated with higher mortality risks in late middle age in all three countries. Risks of death were significantly raised among nulliparous women in Norway and England and Wales, and also raised (although not significantly so) for childless US women. However, although higher parity was associated with a slight mortality disadvantage in England and Wales and the USA, the reverse seemed the case in Norway. These finding suggest that in populations in which fertility control is usual, contextual factors influencing the relative costs and benefits of childbearing may influence associations between fertility histories and later mortality. Am. J. Hum. Biol., 2009. © 2009 Wiley-Liss, Inc. [source] Ethnicity and Politics: Cohesion, Division and British JewsPOLITICAL STUDIES, Issue 4 2001Laurence A. Kotler-Berkowitz Structural, cultural, psychological and materialist theories support the proposition that political cohesion and division in ethnic groups are a function of ethnic cohesion and division generally. The proposition is applied to British Jews, and data from the first nationally representative survey of British Jews are employed to test an empirical hypothesis linking strong manifestations of ethnicity to Conservative partisanship. Results from multinomial logistic regression analysis support the hypothesis, and transformations to probabilities demonstrate the strong effect of ethnic divisions on party divisions. Comparisons are drawn between British Jews and other British ethnic minorities, and between British and American Jews. [source] Politics and the Media in Postcommunist RussiaPOLITICS, Issue 1 2003Stephen White The evidence of a nationally representative survey conducted in April 2001 suggests that television is the medium of choice for most Russians. At least 92 per cent watch at least several times a week, with state channels more popular than those in commercial ownership. The media enjoy a high level of trust, and there is widespread agreement that they should adopt a stabilising role in society rather than simply report developments. Television is the main source of information when Russians make their electoral choices; there are accordingly considerable implications in the extent to which pro-Kremlin candidates and parties enjoy the support of the state media, which in turn are the favourite viewing of the voters that support them. [source] Income Support and Stigma Effects for Young AustraliansTHE AUSTRALIAN ECONOMIC REVIEW, Issue 4 2007Wang-Sheng Lee The central research question addressed in this article is how receipt of income support payments affects the well-being of youths. Using 1997,2004 panel data from a nationally representative survey of Australian youths, we attempt to estimate the size of the welfare stigma faced by Australian youths, where stigma is defined as the effect of welfare receipt on reported happiness levels. In analysing the determinants of happiness, we argue that it is important to control for dynamics and initial conditions. The latter arguably measures an initial setpoint of happiness which the psychology literature has found strong support for. In contrast to the general findings of the existence of a welfare stigma for adults, based on our results using dynamic panel probit models, our findings suggest that for Australian youths there is a small negative, but not statistically significant, stigma associated with welfare receipt. [source] Homo Reciprocans: Survey Evidence on Behavioural Outcomes,THE ECONOMIC JOURNAL, Issue 536 2009Thomas Dohmen This article complements the experimental literature that has shown the importance of reciprocity for behaviour in stylised labour markets or other decision settings. We use individual measures of reciprocal inclinations in a large, representative survey and relate reciprocity to real world labour market behaviour and life outcomes. We find that reciprocity matters and that the way in which it matters is very much in line with the experimental evidence. In particular, positive reciprocity is associated with receiving higher wages and working harder. Negatively reciprocal inclinations tend to reduce effort. Negative reciprocity increases the likelihood of being unemployed. [source] Measuring Attitudes toward the United States Supreme CourtAMERICAN JOURNAL OF POLITICAL SCIENCE, Issue 2 2003James L. Gibson It is conventional in research on the legitimacy of the U.S. Supreme Court to rely on a survey question asking about confidence in the leaders of the Court to indicate something about the esteem with which that institution is regarded by the American people. The purpose of this article is to investigate the validity of this measure. Based on a nationally representative survey conducted in 2001, we compare confidence with several different measures of Court legitimacy. Our findings indicate that the confidence replies seem to reflect both short-term and long-term judgments about the Court, with the greater influence coming from satisfaction with how the Court is performing at the moment. We suggest a new set of indicators for measuring the legitimacy of the Court and offer some evidence on the structure of the variance in these items. [source] Trends in Midlevel Provider Utilization in Emergency Departments from 1997 to 2006ACADEMIC EMERGENCY MEDICINE, Issue 10 2009Michael D. Menchine MD Abstract Objectives:, The objective was to quantify the expansion of midlevel provider (MLP) practice in U.S. emergency departments (EDs) over the past decade. Specifically, we sought to quantify the absolute number of patients seen by MLPs, the annual growth rate of patients seen by MLPs, and the expansion in the proportion of EDs using MLPs. Methods:, Data were analyzed from the ED portion of the 10 most recent years (1997 to 2006) National Hospital Ambulatory Medical Care Survey (NHAMCS), a nationally representative survey of ED visits compiled by the Centers for Disease Control and Prevention (CDC). The main outcomes of interest were the proportion and absolute numbers of ED patients seen by MLPs during the 10-year study period. National estimates derived from sample weights are reported. In addition, a multivariate logistic regression model was created with "seen by midlevel provider" as the dependent variable to determine factors associated with being seen by a MLP. Results:, Between 1997 and 2006, 8.23% (95% confidence interval [CI] = 7.31% to 9.15%) of ED patients were seen by a MLP. The proportion of ED patients seen by MLPs increased from 5.5% (95% CI = 3.8% to 7.1%) in 1997 to 12.7% (95% CI = 10.5% to 14.9%) in 2006 (13% annual growth). This corresponds to an increase in the number of ED patients seen by MLPs from 5.2 million in 1997 to 15.2 million in 2006. The proportion of hospitals using MLPs in the ED increased from 28.3% (95% CI = 22.4% to 34.1%) in 1997 to 77.2% (95% CI = 71.2% to 83.3%) in 2006 (17% annual growth). Slightly over half of MLP cases (54.9%; 95% CI = 49.1% to 60.7%) were also seen by staff physicians. On multivariate regression, younger patient age, non,southern geographic region, and triage acuity were associated with increased MLP use. Conclusions:, The number of ED patients seen by MLPs has increased sharply, from 5.2 million in 1997 (5.5% of all ED cases) to 15.2 million in 2006 (12.7% of all ED cases). Similarly, the proportion of EDs reporting use of MLPs has increased from 28.3% in 1997 to 77.2% in 2006. [source] U.S. Trends in Obstetric Procedures, 1990,2000BIRTH, Issue 3 2002Lola Jean Kozak PhD ABSTRACT: Background: During the 1980s the rate of obstetric procedures performed during delivery rose precipitously. This study follows the use of obstetric procedures through the 1990s to explore whether the patterns witnessed in the previous decade continued through the next. Methods: Data on total obstetric procedures and eight specific procedures (cesarean section, medical and surgical induction of labor, other artificial rupture of membranes, episiotomy, repair of current obstetric laceration, vacuum extraction, forceps delivery) were obtained from the National Hospital Discharge Survey, a nationally representative survey of discharges from short-stay non-Federal hospitals. Approximately 32,000 records for women with deliveries were included in the survey each year. Results: The total rate of all obstetric procedures did not change significantly from 1990 through 2000. However, as during the 1980s, rates increased for induction of labor, vacuum extraction, and repair of current obstetric laceration. Rates decreased for forceps delivery and episiotomy, also continuing 1980s trends. After a long period of increase, the rate of cesarean section declined from 1988 to 1995 but increased again from 1995 to 2000. Conclusions: Unlike the 1980s, the overall rate of obstetric procedures did not increase from 1990 to 2000, but the mix of obstetric procedures performed continued to change during this period. (BIRTH 29:3 September2002) [source] Trends in disposable income among teenage boys and girls in Finland from 1977 to 2003INTERNATIONAL JOURNAL OF CONSUMER STUDIES, Issue 4 2007Tomi P. Lintonen Abstract This article explores changes in the money Finnish young people aged 12,18 years have at their disposal, over a 26-year period 1977,2003. Previous studies suggest that the amount of money young people have is not necessarily dependent on traditional socio-economic variables, but there are no systematic studies on the development of the disposable income of the teenagers. The analyses of this study are based on a series of 14 biannual nationally representative surveys of 12-, 14-, 16- and 18-year-olds in Finland from 1977 to 2003, with a total of 84 404 respondents. Time-trends are shown and analysed by gender, family structure, place of residence and socio-economic status of family using analysis of variance and linear regression modelling. The results show that teenagers' disposable money has increased little between 1977 and 2003 in comparison with the general income development. Economic booms and depressions can be seen in rising and falling amounts of disposal money, particularly among 16- to 18-year-old respondents. There were also significant differences between the genders. Young boys clearly had more money at their disposal than young girls. Children of single parents had more money than their peers from nuclear families. Urban youth had more money than those living in the countryside and the difference increased during the period under examination. The socio-economic position of the family had little impact. [source] Learning Political Information From the News: A Closer Look at the Role of MotivationJOURNAL OF COMMUNICATION, Issue 2 2009Clarissa C. David This paper investigates how motivations that drive news use affect the process of learning political information from the news. A model that traces the influence of motivational factors on following news about general public affairs is proposed. Tests conducted with nationally representative surveys revealed that motivations for following general public affairs in the news are conceptually and empirically distinct. Results showed that certain psychological needs drive motivations toward following general news, and that various types of motives have independent effects on exposure and attention to news. Finally, we found that motivations have significant indirect effects on knowledge about politics. Implications on theoretical developments in political knowledge and learning are discussed. [source] Demographic Factors Associated with Dental Utilization Among Community Dwelling Elderly in the United States, 1997JOURNAL OF PUBLIC HEALTH DENTISTRY, Issue 1 2006Daniel D. Skaar DDS Abstract Objectives: The purpose of this study was to characterize dental service utilization in 1997 by community dwelling Medicare beneficiaries. Methods: The Medicare Current Beneficiary Survey, or MCBS, is a continuous annual series of nationally representative surveys of Medicare beneficiaries. Univariate comparisons were made between dependent variables (dental utilization and types of dental services) by each of the independent variables (age group, gender, race, income, education, population density, marital status and US Census Bureau regions using weighted proportions to test for independence between dependent and independent variables. Results: Overall, an estimated 41% of the population had a dental visit. Although utilization declined with aging, 24% of those 85 and older visited a dentist. Conclusions: This descriptive study provides important information about dental utilization and services in the American elderly population. Younger, high income, white or educated elderly Americans had higher dental utilization. [source] | |||||||||||||||||||