Determinants

Distribution by Scientific Domains

Kinds of Determinants

  • antigenic determinant
  • carbohydrate determinant
  • clinical determinant
  • common determinant
  • critical determinant
  • cross-reactive carbohydrate determinant
  • crucial determinant
  • demand determinant
  • different determinant
  • economic determinant
  • environmental determinant
  • essential determinant
  • fundamental determinant
  • genetic determinant
  • health determinant
  • important determinant
  • important genetic determinant
  • important virulence determinant
  • independent determinant
  • individual determinant
  • institutional determinant
  • key determinant
  • main determinant
  • major determinant
  • mechanistic determinant
  • minor determinant
  • molecular determinant
  • multiple determinant
  • only determinant
  • other determinant
  • other potential determinant
  • pathogenicity determinant
  • possible determinant
  • potential determinant
  • primary determinant
  • principal determinant
  • prognostic determinant
  • proximate determinant
  • psychosocial determinant
  • relevant determinant
  • resistance determinant
  • risk determinant
  • sequence determinant
  • significant determinant
  • social determinant
  • socioeconomic determinant
  • sole determinant
  • specificity determinant
  • strong determinant
  • strongest determinant
  • structural determinant
  • underlying determinant
  • viral determinant
  • virulence determinant

  • Terms modified by Determinants

  • determinant factor
  • determinant mixture
  • determinant role

  • Selected Abstracts


    HYPERTENSION AS A DETERMINANT OF SURVIVAL FOR DIALYSIS PATIENTS

    NEPHROLOGY, Issue 1 2002
    Lynn Kl
    [source]


    THE DETERMINANTS OF LAWS RESTRICTING YOUTH ACCESS TO TOBACCO

    CONTEMPORARY ECONOMIC POLICY, Issue 1 2009
    CRAIG A. GALLET
    Since many smokers begin consuming tobacco products in their adolescent years, many states have adopted a variety of restrictions on youth access to tobacco, which studies show reduces the demand for tobacco among this cohort. This paper takes a different track by addressing the demand for youth access restrictions. Specifically, using a random effects Probit procedure, which controls for the endogeneity of cigarette consumption and taxation, we examine the determinants of nine methods commonly used by states to restrict youth access to tobacco. (JEL H70, I18) [source]


    SURVIVE THEN THRIVE: DETERMINANTS OF SUCCESS IN THE ECONOMICS PH.D. PROGRAM

    ECONOMIC INQUIRY, Issue 4 2007
    WAYNE A. GROVE
    This study investigates the completion of the Ph.D. in economics. We use ex ante information, based upon reviewing individual applications from former doctoral students. Students need different skills to succeed at each distinct stage of the doctoral program. Significant determinants for passing the comprehensive exams include Graduate Record Exam (GRE) verbal and quantitative scores, a Masters degree, and prior focus on economics. By contrast, research motivation and math preparation play significant roles in completing the dissertation. GRE scores become insignificant for completion in the generalized ordered logit estimates, which emphasize the sequential nature of the Economics Ph.D. program. (JEL I210) [source]


    AUDIT FEE DETERMINANTS IN THE UK UNIVERSITY SECTOR

    FINANCIAL ACCOUNTABILITY & MANAGEMENT, Issue 2 2007
    Howard Mellett
    First page of article [source]


    VARYING EFFECT OF FERTILITY DETERMINANTS AMONG MIGRANT AND INDIGENOUS FEMALES IN THE TRANSITIONAL AGRO-ECOLOGICAL ZONE OF GHANA

    GEOGRAFISKA ANNALER SERIES B: HUMAN GEOGRAPHY, Issue 1 2007
    Samuel Nii Ardey Codjoe
    ABSTRACT. The transitional agro-ecological zone of Ghana, located between the richly endowed south and the impoverished north, has attracted seasonal and permanent farm migrants, mainly from northern Ghana, who now live side by side with the indigenous people. While migrants have higher numbers of Muslims, indigenous people are mainly Christians. Although the majority of the migrants live in migrant quarters with less favourable socio-economic conditions, they are more successful farmers and therefore wealthier. The objectives are to examine the varying effect of fertility determinants among migrants and indigenous females. This paper uses data collected in 2002 among 194 females aged 15 to 49 years. Multiple regression models are used to assess fertility determinants. Results show that although migrant households were wealthier, migrant females were more traditional. They had more children living in foster care, and a lower proportion of them approved of men participating in household activities. In addition, they were less well educated, recorded higher infant mortality, gave birth earlier and used less contraception. Furthermore, while a female's migration status is statistically significant so far as non-proximate determinants of fertility are concerned, the same variable is not significant with respect to proximate determinants. In addition, a married female migrant would on average have almost one more child compared to her indigenous counterpart, and migrant females who had experienced the loss of a child would on average have 2.5 more children compared to their indigenous counterparts. Finally, more affluent migrant females have 0.08 fewer children compared to their indigenous counterpart. [source]


    INCORPORATING FINANCING-RELATED DETERMINANTS OF VALUE IN THE DISCOUNTED CASH FLOW MODEL

    JOURNAL OF ECONOMIC SURVEYS, Issue 2 2008
    Seth Armitage
    Abstract The paper discusses how some of the main types of interaction between financing and value can be incorporated in the discounted cash flow model of valuation, including effects arising from taxes, transactions costs, disclosure, information asymmetry and agency problems. It explains whether a given effect should appear in a project's cash flows, in its cost of capital or as an upfront adjustment to value. Most of the effects imply that the principle of value additivity does not hold. [source]


    DETERMINANTS OF A FIRM'S ISO 14001 CERTIFICATION: AN EMPIRICAL STUDY OF TAIWAN

    PACIFIC ECONOMIC REVIEW, Issue 4 2007
    Shih-Ying Wu
    Only rarely have empirical studies analysed the responses of Taiwanese manufacturing firms to ISO 14001, despite firm responses to environmental issues being an important aspect of environmental management. This study empirically examines the determinants of firms' environmental self-governance. Export oriented Taiwanese firms, which face environmental concerns from foreign consumers, are found to be more likely than domestic focused firms to adopt ISO 14001. This study also finds that several firm attributes are decisive for firm adoption of ISO 14001. However, this study does not find any significant impact of local governors' political party affiliation on firms' ISO 14001 certifications. [source]


    DETERMINANTS OF SCHOOL ATTENDANCE AMONG MIGRANT CHILDREN: SURVEY EVIDENCE FROM CHINA'S JIANGSU PROVINCE*

    PACIFIC ECONOMIC REVIEW, Issue 4 2006
    Ingrid Nielsen
    This paper employs a household production function framework to examine the determinants of school attendance among migrant children using a unique dataset collected in China's Jiangsu province. The study finds that the main predictors of school attendance among migrant children in the sample were household income, mother's education, the length of residence of the child's mother in the city and whether both parents were working in the same city. [source]


    SHORT-RUN AND LONG-RUN DETERMINANTS OF THE REAL EXCHANGE RATE IN MEXICO

    THE DEVELOPING ECONOMIES, Issue 1 2008
    Antonia LÓPEZ VILLAVICENCIO
    C32; F31; F41; F49 This paper explores the real exchange rate behavior in Mexico from 1960 until 2005. Since the empirical analysis reveals that the real exchange rate is not mean reverting, we propose that economic fundamental variables affect its evolution in the long run. Therefore, based on equilibrium exchange rate paradigms, we propose a simple model of real exchange rate determination, which includes the relative GDP per capita, the real interest rates, and the net foreign assets over a long period of time. Our analysis also considers the dynamic adjustment in response to shocks through impulse response functions derived from the multivariate vector autoregressive (VAR) model. [source]


    DETERMINANTS OF FOREIGN INSTITUTIONAL INVESTMENT IN INDIA: THE ROLE OF RETURN, RISK, AND INFLATION

    THE DEVELOPING ECONOMIES, Issue 4 2004
    Kulwant RAI
    The present study examines the determinants of foreign institutional investments (FII) in India, which by January 2003 almost exceeded U.S. $12 billion. Given the huge volume of these flows and their impact on the other domestic financial markets, understanding the behavior of the flows becomes very important, especially at a time of liberalizing the capital account. By using monthly data, we found that FII inflow depends on stock market returns, inflation rates (both domestic and foreign), and ex-ante risk. In terms of magnitude, the impact of stock market returns and the ex-ante risk turned out to be the major determinants of FII inflow. Unlike some of the other investigations of this topic, our study has not found any causative link running from FII inflow to stock returns. Stabilizing stock market volatility and minimizing the ex-ante risk would help to attract more FII, an inflow of which has a positive impact on the real economy. [source]


    THE DETERMINANTS OF GRADE ATTAINMENT IN LOW-INCOME COUNTRIES: EVIDENCE FROM RURAL BANGLADESH

    THE DEVELOPING ECONOMIES, Issue 4 2004
    Hayfa GRIRA
    This paper presents an econometric analysis of the effects of child health on school enrollment and grade attainment in Bungladesh. It improves on past studies in a number of ways mainly by incorporating into its analysis the endogenous nature of child health. The results challenge the conclusions found in the literature. First, it finds that in Bangladesh, a child's health and his/her probability of being enrolled in school are at best weakly related. Second, it shows that once enrolled, nutritional deficiencies retard substantially school progress: Underweight children tend to be in lower grades than well-fed children of the same age. It is estimated that a one standard deviation improvement in weight-for-age would be expected to reduce the grades behind by about 0.25 years or about 13.5 percent of the actual years completed. Finally, the estimates suggest that the weight-for-age indicator appears as the best predictor of nutritional status. [source]


    THE DETERMINANTS OF INTERNATIONAL PATENTING FOR NINE AGRICULTURAL BIOTECHNOLOGY FIRMS,

    THE JOURNAL OF INDUSTRIAL ECONOMICS, Issue 2 2010
    H. PHOEBE CHAN
    This paper examines international patent application decisions of nine agricultural biotechnology firms from 1990,2000 in Australia, Brazil, Canada, China, the European Patent Office, Japan and South Africa. The data reveal a low frequency of international applications despite an initial United States' application, indicating very low values for patents abroad. The results indicate that invention quality plays an important role in firms' decisions to patent abroad and that a single international application is a good predictor of multiple international applications. Further, significant country fixed effects suggest wide differences in business climates and patent enforcement among countries. [source]


    THE DETERMINANTS OF THE QUANTITY-QUALITY BALANCE IN MONOPOLY,

    AUSTRALIAN ECONOMIC PAPERS, Issue 1 2009
    HUGH SIBLY
    This paper describes how a monopolist manipulates the balance of quantity and quality in order to increase revenue when its customers treat quantity and quality as substitutes. This ,skewing' of quality depends on the characteristics of customer's demand for quality. Customers differ in demand for quality, because they differ in either (i) their preferences and/or (ii) their time cost per unit. The monopolist is constrained to supply the same quality of good to all customers. The price and quality per unit are described under the assumption the monopolist (i) profit maximises; (ii) maximises social welfare subject to a profit constraint. The determinants of the skewing of quantity and quality are found under third-degree price discrimination and uniform pricing. [source]


    THE ETHICAL IMPLICATIONS OF THE SOCIAL DETERMINANTS OF HEALTH: A GLOBAL RENAISSANCE FOR BIOETHICS

    BIOETHICS, Issue 2 2009
    PATRICIA ILLINGWORTH
    First page of article [source]


    EPIDEMIOLOGY AND SOCIAL JUSTICE IN LIGHT OF SOCIAL DETERMINANTS OF HEALTH RESEARCH

    BIOETHICS, Issue 2 2009
    SRIDHAR VENKATAPURAM
    ABSTRACT The present article identifies how social determinants of health raise two categories of philosophical problems that also fall within the smaller domain of ethics; one set pertains to the philosophy of epidemiology, and the second set pertains to the philosophy of health and social justice. After reviewing these two categories of ethical concerns, the limited conclusion made is that identifying and responding to social determinants of health requires inter-disciplinary reasoning across epidemiology and philosophy. For the reasoning used in epidemiology to be sound, for its scope and (moral) purpose as a science to be clarified as well as for social justice theory to be relevant and coherent, epidemiology and philosophy need to forge a meaningful exchange of ideas that happens in both directions. [source]


    Elite Consensus as a Determinant of Alliance Cohesion: Why Public Opinion Hardly Matters for NATO-led Operations in Afghanistan

    FOREIGN POLICY ANALYSIS, Issue 3 2010
    Sarah Kreps
    Despite the increasing popularity of fighting wars through multilateral coalitions, scholars have largely been silent on the question of how public opinion in member states affects alliance cohesion. This article assesses public opinion data for states contributing to operations in Afghanistan. It finds that despite the unpopularity of the war, leaders have largely bucked public opinion and neither reduced nor withdrawn troops from NATO-led operations in Afghanistan. Theoretical expectations about international cooperation and evidence from case studies point to elite consensus as the reason why leaders are not running for the exits in Afghanistan when their publics would prefer that they do. As the article shows, operating through a formal institution such as NATO creates systemic incentives for sustained international cooperation. The result is that elite consensus inoculates leaders from electoral punishment and gives states' commitments to Afghanistan a "stickiness" that defies negative public opinion. A formal alliance such as NATO may therefore create more policy constraints than an ad hoc coalition but also increase the costs of defection and confer a degree of staying power that is unexpected given the adverse public opinion environment. [source]


    Strontium Ranelate Treatment Improves Trabecular and Cortical Intrinsic Bone Tissue Quality, a Determinant of Bone Strength,

    JOURNAL OF BONE AND MINERAL RESEARCH, Issue 9 2007
    Patrick Ammann MD
    Abstract Beside its influence on determinants of bone strength (geometry, microarchitecture), which is likely to be related to a cellular effect, strontium ranelate improves bone tissue quality as evaluated by nanoindentation, increasing elastic modulus, hardness, and dissipated energy in vertebrae of rats treated for 104 wk with daily dose from 0 to 900 mg/kg. Introduction: We previously showed that strontium ranelate treatment improves the mechanical properties of the vertebral body and long bone midshaft in intact rats. The increased energy to failure obtained with strontium ranelate is essentially caused by an increase in plastic energy, suggesting that bone formed during treatment can withstand greater deformation before fracture. In the bone mineral phase, strontium is mainly located in the hydrated shell and could thus potentially influence intrinsic bone tissue quality. Materials and Methods: To study whether strontium ranelate treatment could positively influence intrinsic bone tissue quality (elastic modulus, hardness, and dissipated energy), nanoindentation tests were performed at the level of trabecular nodes and cortex under physiological or dry conditions in vertebrae of rats treated for 104 wk with strontium ranelate at a daily dose of 0, 225, 450, or 900 mg/kg (n = 12 per group). Ex vivo ,CT measurements and axial compression tests of adjacent vertebral bodies were also performed. Significance of difference was evaluated using ANOVA. Results: In agreement with previous results, strontium ranelate (900 mg/kg/d) significantly increased versus controls in maximal load (+23%), total energy (+71%), and plastic energy (+143%). At the level of trabecular bone, strontium ranelate treatment resulted in a significant increase in elastic modulus (+15.1%, p < 0.01), hardness (+11.5%, p < 0.05), and dissipated energy (+16.2%, p < 0.001) versus controls in physiological, but not in dry, conditions. The effect was less pronounced in cortex. Conclusions: These results show for the first time a direct action of strontium ranelate on bone tissue quality. Beside its shown influence on classical determinants of bone strength (geometry, microarchitecture), which is likely to be related to a cellular effect, strontium ranelate improves bone tissue quality. This could contribute to the increase in bone strength and thus be involved in the reduction of fracture risk in postmenopausal osteoporotic patients treated with strontium ranelate. [source]


    Fluctuation in Autonomic Tone is a Major Determinant of Sustained Atrial Arrhythmias in Patients with Focal Ectopy Originating from the Pulmonary Veins

    JOURNAL OF CARDIOVASCULAR ELECTROPHYSIOLOGY, Issue 3 2001
    MARC ZIMMERMANN M.D.
    Autonomic Variations in Focal AF. Introduction: This study was designed to analyze dynamic changes in autonomic tone preceding the onset of sustained atrial arrhythmias in patients with focal atrial fibrillation (AF) to determine why patients with frequent discharge from the arrhythmogenic foci develop sustained AF. Methods and Results: Holter tapes from 13 patients (10 men and 3 women; mean age 53 ± 5 years) with paroxysmal "lone" AF (mean 18 ± 13 episodes per week) and a proven focal origin (pulmonary veins in all cases) were analyzed. A total of 38 episodes of sustained AF (> 30 min) were recorded and submitted to frequency-domain heart rate variability analysis. Six periods were studied using repeated measures analysis of variance: the 24,hour period, the hour preceding AF, and the 20 minutes before AF divided into four 5,minute periods. A significant increase in high-frequency (HF, HF-NU) components was observed during the 20 minutes preceding AF (P = 0.003 and 0.002, respectively), together with a progressive decrease in normalized low-frequency (LF-NU) components (P = 0.035). An increase in LF/HF ratio followed by a linear decrease starting 15 minutes before sustained AF also was observed, indicating fluctuations in autonomic tone, with a primary increase in adrenergic drive followed by a marked modulation toward vagal predominance immediately before AF onset. Conclusion: In patients with focal ectopy originating from the pulmonary veins, sustained episodes of atrial arrhythmias are mainly dependent on variations of autonomic tone, with a significant shift toward vagal predominance before AF onset. [source]


    An Examination of Mandated Versus Voluntary Referral as a Determinant of Clinical Outcome

    JOURNAL OF MARITAL AND FAMILY THERAPY, Issue 3 2009
    Christine M. J. Snyder
    A literature review was undertaken to examine evidence for the effectiveness of psychotherapy with mandated clients. The primary question addressed was whether or not clients mandated to therapy, whether by court order or by order of their employers, show poorer outcomes than clients who enter therapy voluntarily. To this end, research on client resistance and motivational readiness to change was reviewed. This was followed by an examination of research on the effectiveness of mandated treatment. The question of the potential influence of relationship factors such as the therapeutic alliance was also addressed. The literature review was followed by suggestions for future research on the effectiveness of treatment for clients with mandated or voluntary referral status. [source]


    RBC Aggregation: More Important than RBC Adhesion to Endothelial Cells as a Determinant of In Vivo Blood Flow in Health and Disease

    MICROCIRCULATION, Issue 7 2008
    OGUZ K. BASKURT
    ABSTRACT Although the shear-dependent and reversible phenomenon of red blood cell (RBC) aggregation has been studied for decades, its role as a determinant of in vivo blood flow in both health and disease has not yet been fully documented. In this brief review, we present compelling arguments, supported by literature evidence, that in vivo flow dynamics are more affected by RBC aggregation than by RBC adhesion to endothelial cells (ECs). A companion article (i.e., a "counter-point") published in this issue of the journal argues that in disease states, RBC-EC adhesion is the more important determinant. [source]


    Is Income Inequality a Determinant of Population Health?

    THE MILBANK QUARTERLY, Issue 1 2004
    Part 1.
    This article reviews 98 aggregate and multilevel studies examining the associations between income inequality and health. Overall, there seems to be little support for the idea that income inequality is a major, generalizable determinant of population health differences within or between rich countries. Income inequality may, however, directly influence some health outcomes, such as homicide in some contexts. The strongest evidence for direct health effects is among states in the United States, but even that is somewhat mixed. Despite little support for a direct effect of income inequality on health per se, reducing income inequality by raising the incomes of the most disadvantaged will improve their health, help reduce health inequalities, and generally improve population health. [source]


    Reversal Blood Flow Component as Determinant of the Arterial Functional Capability: Theoretical Implications in Physiological and Therapeutic Conditions

    ARTIFICIAL ORGANS, Issue 3 2009
    Daniel Bia
    Abstract In several physiological, pathological, and therapeutic circumstances, the arterial blood flow is acutely modified, increasing, in some vascular segments the reversal (SSR) and oscillatory (SSO) components of the shear stress. Recently, in an in vivo model we found a relationship between acute changes in SSR and SSO, and variations in the arterial viscoelasticity. As the arterial viscoelasticity and diameter are the main determinants of the arterial buffering (BF) and conduit (CF) functions, changes in those functions could be expected associated with variations in SSR and SSO. The aim was to analyze the association between acute increases in SSR and SSO, and changes in the aortic CF and BF. Aortic flow, pressure, and diameter were measured in 16 sheep under basal and high reversal and oscillatory flow conditions (high SSR and SSO). Aortic BF and CF were quantified, and their potential association with the SSR and SSO components were analyzed. During high reversal flow rate conditions, a smooth muscle contraction-pattern was evidenced, with an increase in BF and a decrease in CF. Changes in BF and CF were associated with the changes in SSR and SSO. The acute effects on the arterial wall biomechanics of variations in SSR and SSO could contribute to comprehend their chronic effects, and the meaning of the acute vascular effects of changes in SSR and SSO would depend on the situation. Increases in SSR and SSO could be associated with smooth muscle tone increase-dependent changes in arterial BF and CF. [source]


    Changes in Vein Dynamics Ranging from Low to High Pressure Levels as a Determinant of the Differences in Vein Adaptation to Arterial Hemodynamic Conditions

    ARTIFICIAL ORGANS, Issue 7 2007
    Yanina Zócalo
    Abstract:, The causes of the regional differences in venous grafts patency rates are partially understood. Differences in vein dynamics during physiological situations could determine differences in veins' capability to face arterial conditions and could contribute to the dissimilar performance of veins as arterial grafts. In vitro pressure and diameter were measured in four different veins during physiological and arterial (graft) pressure conditions. A diameter,pressure transfer function was designed. Compliance, viscous and inertial properties; circumferential stresses and deformation; and buffering function were calculated. Regional differences in veins' dynamics, but not in buffering function were found during physiological and arterial conditions. The back vein (femoral) showed the least changes when submitted to arterial conditions. Arterial conditions represent different changes in vein dynamics depending on the segment considered. The regional differences in vein dynamics, both at physiological and graft conditions, could contribute to explain the dissimilar results of venous grafts. [source]


    Patient and Physician Determinants of Implantable Cardioverter Defibrillator Use in the Heart Failure Population

    CONGESTIVE HEART FAILURE, Issue 4 2010
    Sanders H. Chae MD
    Recent studies report surprisingly low rates of implantable cardioverter defibrillator (ICD) placement for primary prevention against sudden cardiac death among patients with heart failure and left ventricular systolic dysfunction. Reasons for the low rates of utilization are not well understood. The authors examined ICD implantation rates at a university-based tertiary care center and used multivariable analysis to identify independent factors associated with ICD utilization. The ICD implantation rate for 850 eligible patients was 70%. Forty-seven (18%) patients refused implantation; women were twice as likely to refuse compared to men (8% vs 4%, P=.013). Race was not associated with utilization. On multivariable analysis, independent predictors of implantation included having a heart failure specialist (odds ratio [OR], 8.13; P<.001) or general cardiologist (OR, 2.23; P=.13) managing care, age range 70 to 79 (OR, 0.55; P<.001) or 80 and older (OR, 0.26; P<.001), female sex (OR, 0.49; P<.001), QRS interval (OR, 1.016; P<.001), diastolic blood pressure (OR, 0.979; P=.011), cerebrovascular disease (OR, 0.44; P=.007), and dementia (OR, 0.13; P=.002). Our registry of patients with cardiomyopathy and heart failure reveals that high rates of utilization are possible. Factors closely associated with ICD utilization include type of physician coordinating care, age, and comorbidities. Congest Heart Fail. 2010;16:141,146. © 2010 Wiley Periodicals, Inc. [source]


    Avoiding Accounting Fixation: Determinants of Cognitive Adaptation to Differences in Accounting Method,

    CONTEMPORARY ACCOUNTING RESEARCH, Issue 2 2005
    DAVID T. DEARMAN
    Abstract Much research over the last 30 years has provided evidence that individuals display accounting fixation; that is, their cognitive process does not appropriately adapt to cross-sectional or temporal differences in an accounting method. This paper presents the results of a quasi-experimental test of the hypothesis that cognitive adaptation to a change in accounting method is an ordinal interactive function of three person characteristics: relevant accounting knowledge, general problem-solving ability, and intrinsic motivation to appropriately engage in the decision task. Based on a product-pricing decision task in which participants are provided with product costs reported by two generally employed product-costing methods (activity-based costing [ABC] and volume-based costing), the results show that the majority of participants did not change their cognitive behavior when there was a change in the costing method. Further, those participants who did adapt to the change in accounting method, and thus avoided accounting fixation, did so by debiasing costs reported by volume-based costing but not by ABC. Finally, these adapters generally exhibited high values for all three of the person characteristics compared with those who did not adapt. [source]


    The Lateral Ala's Volume and Position Are Critical Determinants of Aesthetically Successful Nasal Reconstruction: A Photographic Case Series

    DERMATOLOGIC SURGERY, Issue 4 2009
    JONATHAN L. COOK MD
    First page of article [source]


    PROCEED: Prospective Obesity Cohort of Economic Evaluation and Determinants: baseline health and healthcare utilization of the US sample,

    DIABETES OBESITY & METABOLISM, Issue 12 2008
    A. M. Wolf
    Aim:, To summarize baseline characteristics, health conditions, resource utilization and resource cost for the US population for the 90-day period preceding enrolment, stratified by body mass index (BMI) and the presence of abdominal obesity (AO). Methods:, PROCEED (Prospective Obesity Cohort of Economic Evaluation and Determinants) is a multinational, prospective cohort of control (BMI 20,24.0 kg/m2), overweight (BMI 25,29.9 kg/m2) and obese (BMI , 30 kg/m2) subjects with AO and without AO [non-abdominal obesity (NAO)], defined by waist circumference (WC) >102 and 88 cm for males and females, respectively. Subjects were recruited from an Internet consumer panel. Outcomes were self-reported online. Self-reported anthropometric data were validated. Prevalence of conditions and utilization is presented by BMI class and AO within BMI class. Differences in prevalence and means were evaluated. Results:, A total of 1067 overweight [n = 474 (NAO: n = 254 and AO: n = 220)] and obese [n = 493 (NAO: n = 39 and AO: n = 454)] subjects and 100 controls were recruited. Self-reported weight (r = 0.92) and WC (r = 0.87) were correlated with measured assessments. Prevalence of symptoms was significantly higher in groups with higher BMI, as were hypertension (p < 0.0001), diabetes (p < 0.0001) and sleep apnoea (p < 0.0001). Metabolic risk factors increased with the BMI class. Among the overweight class, subjects with AO had significantly more reported respiratory, heart, nervous, skin and reproductive system symptoms. Overweight subjects with AO reported a significantly higher prevalence of diabetes (13%) compared with overweight subjects with NAO (7%, p = 0.04). Mean healthcare cost was significantly higher in the higher BMI classes [control ($456 ± 937) vs. overweight ($1084 ± 3531) and obese ($1186 ± 2808) (p < 0.0001)]. Conclusion:, An increasing gradient of symptoms, medical conditions, metabolic risk factors and healthcare utilization among those with a greater degree of obesity was observed. The independent effect of AO on health and healthcare utilization deserves further study with a larger sample size. [source]


    Determinants of coverage in Community-based Therapeutic Care programmes: towards a joint quantitative and qualitative analysis

    DISASTERS, Issue 2 2010
    Saúl Guerrero
    One of the most important elements behind the success of Community-based Therapeutic Care (CTC) programmes for the treatment of severe acute malnutrition has been their ability to achieve high levels of coverage. In CTC, coverage is measured using the Centric System Area Sampling (CSAS) method, which provides accurate and reliable estimates of programme coverage as well as information on the primary reasons for non-attendance. Another important feature of CTC programmes is their use of socio-cultural assessments to determine potential barriers to access and to develop context-specific responses. By analysing data on non-attendance provided by CSAS surveys, in conjunction with data from socio-cultural assessments, it is possible to identify common factors responsible for failures in programme coverage. This paper focuses on an analysis of data from 12 CTC programmes across five African countries. It pinpoints three common factors (distance to sites, community awareness of the programme, and the way in which rejections are handled at the sites) that, together, account for approximately 75 per cent of non-attendance. [source]


    Determinants for the successful establishment of exotic ants in New Zealand

    DIVERSITY AND DISTRIBUTIONS, Issue 4 2005
    Philip J. Lester
    ABSTRACT Biological invasions can dramatically alter ecosystems. An ability to predict the establishment success for exotic species is important for biosecurity and conservation purposes. I examine the exotic New Zealand ant fauna for characteristics that predict or determine an exotic species' ability to establish. Quarantine records show interceptions of 66 ant species: 17 of which have established, 43 have failed to establish, whereas nests of another six are periodically observed but have failed to establish permanently (called ,ephemeral' establishment). Mean temperature at the highest latitude and interception variables were the only factors significantly different between established, failed or ephemeral groups. Aspects of life history, such as competitive behaviour and morphology, were not different between groups. However, in a stepwise discriminant analysis, small size was a key factor influencing establishment success. Interception rate and climate were also secondarily important. The resulting classification table predicted establishment success with 71% accuracy. Because not all exotic species are represented in quarantine records, a further discriminant model is described without interception data. Though with less accuracy (65%) than the full model, it still correctly predicted the success or failure of four species not used in the previous analysis. Techniques for improving the prediction accuracy are discussed. Predicting which species will establish in a new area appears an achievable goal, which will be a valuable tool for conservation biology. [source]


    Lifetime multiple substance use pattern among heroin users before entering methadone maintenance treatment clinic in Yunnan, China

    DRUG AND ALCOHOL REVIEW, Issue 4 2010
    LEI LI
    Abstract Introduction and Aims. Multiple substance use leads to greater levels of psycho-behavioural problems, unsafe sex, and therefore a high risk of contracting sexually transmitted diseases, and is also more difficult to treat. This study aims to determine pattern of lifetime multiple substance use among Chinese heroin users before entering methadone maintenance treatment clinic. Design and Methods. A survey to obtain retrospective longitudinal data on lifetime multiple substance use was conducted among 203 heroin users in two of the biggest methadone maintenance clinics in Kunming City, Yunnan province. Results. All participants used more than one substance in their lifetime. Most of them used four or more substance groups (range two to seven groups). The most common substance patterns in lifetime use were alcohol, tobacco, opiates and depressants. Approximately 80% of them had a history of simultaneous substance use (co-use). The most common combination of co-use pattern was heroin with depressant. Common reasons for co-use were to get high, to experiment, to sleep and to increase the potency of other drugs. Determinants of co-use were education, marital status and family relationship. Discussion and Conclusions. Multiple substance use is highly prevalent among Chinese heroin users. Depressants are the most common substances used in combination with heroin.[Li L, Sangthong R, Chongsuvivatwong V, McNeil E, Li J. Lifetime multiple substance use pattern among heroin users before entering methadone maintenance treatment clinic in Yunnan, China. Drug Alcohol Rev 2010] [source]