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Complex Survey Design (complex + survey_design)
Selected AbstractsFactors Associated with the Income Distribution of Full-Time Physicians: A Quantile Regression ApproachHEALTH SERVICES RESEARCH, Issue 5 2007Ya-Chen Tina Shih Objective. Physician income is generally high, but quite variable; hence, physicians have divergent perspectives regarding health policy initiatives and market reforms that could affect their incomes. We investigated factors underlying the distribution of income within the physician population. Data Sources. Full-time physicians (N=10,777) from the restricted version of the 1996,1997 Community Tracking Study Physician Survey (CTS-PS), 1996 Area Resource File, and 1996 health maintenance organization penetration data. Study Design. We conducted separate analyses for primary care physicians (PCPs) and specialists. We employed least square and quantile regression models to examine factors associated with physician incomes at the mean and at various points of the income distribution, respectively. We accounted for the complex survey design for the CTS-PS data using appropriate weighted procedures and explored endogeneity using an instrumental variables method. Principal Findings. We detected widespread and subtle effects of many variables on physician incomes at different points (10th, 25th, 75th, and 90th percentiles) in the distribution that were undetected when employing regression estimations focusing on only the means or medians. Our findings show that the effects of managed care penetration are demonstrable at the mean of specialist incomes, but are more pronounced at higher levels. Conversely, a gender gap in earnings occurs at all levels of income of both PCPs and specialists, but is more pronounced at lower income levels. Conclusions. The quantile regression technique offers an analytical tool to evaluate policy effects beyond the means. A longitudinal application of this approach may enable health policy makers to identify winners and losers among segments of the physician workforce and assess how market dynamics and health policy initiatives affect the overall physician income distribution over various time intervals. [source] Changes in perceived effect of practice guidelines among primary care doctorsJOURNAL OF EVALUATION IN CLINICAL PRACTICE, Issue 4 2007Lee Cheng MD MSc Abstract Rationale, aims and objectives, Evidence suggests that when doctors use systematically developed clinical practice guidelines they have the potential to improve the safety, quality and value of health care. The purpose of this study was to evaluate recent changes in the perceptions of practice guidelines among US primary care doctors. Methods, Data were collected from the Community Tracking Survey 1996,97 and 2000,01. All results were weighted and adjusted to reflect the complex survey design. Results, Over the 5 years, the proportion of primary care doctors who said that practice guidelines had at least a moderate effect on their practice of medicine increased from 45.8% to 60.7%. This increase was nearly equal among primary care doctors of family medicine, internal medicine and paediatrics. In the 2001 survey, a higher perceived effect of practice guidelines was described by female doctors (OR = 1.39, 95% CI 1.19,1.63) and doctors who were practising in a large model group (OR = 1.73; 95% CI 1.04,2.89). Doctors who graduated from medical school within 10 years of the survey were more likely to report that practice guidelines had a positive effect on their practice of medicine than doctors who graduated 10 or more years before the survey. Conclusion, The perceived effect of practice guidelines on primary care doctors increased over time. Improved dissemination of guidelines and curriculum changes may have led recent primary care graduates to view practice guidelines as more important. [source] Does Alcohol Involvement Increase the Severity of Intimate Partner Violence?ALCOHOLISM, Issue 4 2010Christy M. McKinney Background:, Most studies that have examined alcohol use immediately prior to intimate partner violence (IPV) have been limited to male-to-female partner violence (MFPV) and are subject to a number of methodological limitations. We add new information concerning the relationship between alcohol involvement and severity of IPV, MFPV, and female-to-male partner violence (FMPV). Methods:, We analyzed data from a 1995 U.S. national population-based survey of couples ,18 years old. We examined 436 couples who reported IPV and had information on alcohol involvement with IPV. We measured IPV using a revised Conflict Tactics Scale, Form R that asked respondents about 11 violent behaviors in the past year. Respondents were classified into mutually exclusive categories as having experienced mild only or mild + severe ("severe") IPV, MFPV or FMPV. Respondents were also asked if they or their partner were drinking at the time the violent behavior occurred and were classified as exposed to IPV with or without alcohol involvement. We estimated proportions, odds ratios, 95% confidence intervals, and p -values of the proposed associations, accounting for the complex survey design. Results:, Overall, 30.2% of couples who reported IPV reported alcohol involved IPV; 69.8% reported no alcohol involvement. In adjusted analyses, those reporting severe (vs. mild only) IPV were more than twice as likely to report alcohol involvement. In adjusted analyses, those reporting severe (vs. mild) MFPV or FMPV were more likely to report female but not male alcohol involvement. Though estimates were positive and strong, most confidence intervals were compatible with a wide range of estimates including no association. Conclusions:, Our findings suggest alcohol involvement of either or both in the couple increases the risk of severe IPV. Our findings also suggest female alcohol use may play an important role in determining the severity of IPV, MFPV or FMPV. [source] Racial and ethnic disparities in work-related injuries and socio-economic resources among nursing assistants employed in US nursing homes,AMERICAN JOURNAL OF INDUSTRIAL MEDICINE, Issue 10 2010SangWoo Tak ScD Abstract Background We aimed to estimate the proportion of nursing assistants (NAs) in the US with work-related injuries and insufficient socio-economic resources by race/ethnicity. Methods Data from the 2004 National Nursing Assistant Survey (NNAS), a nationally representative sample survey of NAs employed in United States nursing homes, were analyzed accounting for the complex survey design. Results Among 2,880 participants, 44% reported "scratch, open wounds, or cuts" followed by "back injuries" (17%), "black eyes or other types of bruising" (16%), and "human bites" (12%). When compared to non-Hispanic white NAs, the adjusted rate ratio (RR) for wound/cut was 0.74 for non-Hispanic black NAs (95% confidence interval [CI]: 0.65,0.85). RRs for black eyes/bruises were 0.18 for non-Hispanic black NAs (95% CI: 0.12,0.26), and 0.55 for Hispanic NAs (95% CI: 0.37,0.82). Conclusions Minority racial and ethnic groups were less likely to report having experienced injuries compared with non-Hispanic white NAs. Future research should focus on identifying preventable risk factors, such as differences by race and ethnicity in the nature of NA jobs and the extent of their engagement in assisting patients with activities of daily living. Am. J. Ind. Med. 53:951,959, 2010. © 2010 Wiley-Liss, Inc. [source] Medical visits among adults with symptoms commonly associated with an overactive bladderBJU INTERNATIONAL, Issue 3 2006SUNNY H. KIM OBJECTIVES To examine nationally representative data and thus obtain estimates of the use of healthcare providers associated with the overactive bladder (OAB) symptoms, a condition characterized by frequency, urgency and nocturia, with or with no urge incontinence, as although it is ranked among the 10 most common chronic medical conditions in the USA, the level of OAB-associated medical treatment remains largely unknown. METHODS To estimate the number of annual OAB-associated medical visits among patients aged ,18 years, three national databases in the USA (year 2000) were examined: the National Ambulatory Medical Care Survey, the National Hospital Ambulatory Medical Care Survey, and the National Hospital Discharge Survey. Population estimates were constructed using design-based statistical analyses to account for the complex survey designs of data. RESULTS During 2000, adult Americans made 1.4 million (95% confidence interval 1.1,1.8 million) ambulatory visits to non-Federal office-based physicians with International Classification of Disease (ICD-9) coding indicative of OAB symptoms. Accounting for emergency and outpatient department visits, as well as non-Federal short-stay hospital discharges, the estimated number of medical visits with OAB-associated ICD-9 coding was <1.5 million. CONCLUSION The prevalence of OAB was estimated to be 34 million adult Americans. When 1.4 million ambulatory visits were compared with this prevalence, as few as 4% of adult Americans with OAB sought medical treatment during the year 2000. The present results therefore suggest a large unmet medical need among the population of adult Americans with OAB. [source] | ||||||||||