Health surveys are an important resource for monitoring population health, but selective nonresponse may impede valid inference. This study aimed to assess nonresponse bias in a population-sampled health survey in Scotland, with a focus on alcohol-related outcomes. Nonresponse bias was assessed by examining whether rates of alcohol-related harm (i.e., hospitalization or death) and all-cause mor...

Purpose To investigate the association of clinical outcomes with platelet function-guided modification in antiplatelet therapy in patients with ischemic stroke. Results Among 812 patients, 223 patients had aspirin nonresponse, 204 patients was modified in antiplatelet therapy after platelet function testing. Mean follow-up period was 4.8 ± 1.7 years (ranged from 1 to 6.4 years). The incidence...

Received: 5 December 2008 Revised: 27 October 2009 Accepted: 2 November 2009 Online publication date: 20 May 2010 Abstract The issue of corruption is important to politicians, citizens, and firms. Since the early 1990s, a large number of studies have sought to understand the causes and consequences of corruption employing firm-level survey data from various countries. While insightful, these an...

BACKGROUND In studies from high-income countries, human immunodeficiency virus type 1 (HIV-1)-infected persons have diminished responses to hepatitis B virus (HBV) vaccination, compared with HIV-1-uninfected persons, but data from other settings are limited. METHODS We compared the immune response to HBV vaccination among HIV-1-infected and HIV-1-uninfected Kenyan adults and assessed the resp...

BACKGROUND This study was carried out to use multiple imputation (MI) in order to correct for the potential nonresponse bias in measurements related to variable fasting blood glucose (FBS) in non-communicable disease risk factors survey conducted in Iran in 2007. METHODS Five multiple imputation methods as bootstrap expectation maximization, multivariate normal regression, univariate linear r...

Population estimates of health conditions come from large national surveys. However, these estimates may vary across studies for groups with differing risk for diagnosable conditions like diabetes. The purpose of the current study is to investigate differences in prevalence estimates of diabetes risk for young adults between an age-matched subsample of the NHANES and the Add Health studies. Thi...

Survey nonresponse and attrition undermine the validity of many and possibly most econometric estimates. In this paper, we discuss simple methods for assessing the nature of the damage caused by such problems. A fundamental component of the methods we discuss is partial randomization of non–response. We evaluate the performance of simple grouped data estimators for sample selection (a là Gronau...

Collecting data from hard-to-reach populations is a key challenge for research on poverty and other forms of extreme disadvantage. With data from the Boston Reentry Study (BRS), we document the extreme marginality of released prisoners and the related difficulties of study retention and analysis. Analysis of the BRS data yields three findings. First, released prisoners show high levels of "cont...

Introduction In the Current Population Survey, a household survey from which labor force estimates are produced, selected housing units remain in sample during a 16-month period. The households are interviewed during the first 4 and last 4 months of this period. These interview months are referred to as “month-in-sample” (MIS) 1 to 8. Matching households between months allows an analysis of the...

National Health Interview Survey (NHIS) survey weights account for complex survey design, nonresponse, and post-stratification. The National Center for Health Statistics (NCHS) can link Medicare data to NHIS respondents. A self-selected subset of NHIS participants are not “eligible” for linkage to Medicare since they refused to provide a social security number (SSN), a Health Insurance Claim (H...