OBJECTIVE To empirically compare the Cox, log-binomial, Poisson and logistic regressions to obtain estimates of prevalence ratios (PR) in cross-sectional studies. METHODS Data from a population-based cross-sectional epidemiological study (n = 2072) on elderly people in Sao Paulo (Southeastern Brazil), conducted between May 2003 and April 2005, were used. Diagnoses of dementia, possible cases ...

BACKGROUND AND PURPOSE Repinotan hydrochloride is a serotonin (5-HT)(1A) receptor full agonist with evidence of neuroprotection in animal models of permanent and transient focal ischemia. The purpose of this Phase IIb study was to investigate the efficacy, safety, and tolerability of a targeted exposure to repinotan in patients with acute ischemic stroke. METHODS This was a double-blind, plac...

Papillary thyroid cancer (PTC) among individuals exposed to radioactive iodine in their childhood or adolescence is a major internationally recognized health consequence of the Chernobyl accident. To identify genetic determinants affecting individual susceptibility to radiation-related PTC, we conducted a genome-wide association study employing Belarusian patients with PTC aged 0-18 years at th...

The current study aimed to examine differential item functioning (DIF) of a numerical ability test for Gulf state school students. This examined the DIF items by gender and country using two analysis methods; Likelihood Ratio Test (LRT) Mantel-Haenszel (MH). sample size was 2689 individuals throughout grades 5 6, researchers used MH with SPSS LRT BILOG-MG. classification stability coefficient k...

This study aims to explore psychometric characteristics and detect whether the teacher-made chemistry learning evaluation instrument contains item bias that can benefit students of a certain gender. The research sample was 358 class XII SMA in Yogyakarta who were taken by cluster random sampling then answer analyzed Winsteps Rasch Software 3.73. In general, it be concluded achievement is good t...

Ensuring measurement invariance for students with disabilities is critical fair in large-scale testing. Specific learning disability constitutes the largest group among groups. In this study, it was aimed to examine of Turkish Central Exam Secondary Education according whether or not have a specific disability. 994 diagnosed formed focus group, whilst 1,000 without any constituted reference gro...

Abstract In many observational studies, the interest is in effect of treatment on bad, aberrant outcomes rather than average outcome. For such settings, traditional approach to define a dichotomous outcome indicating aberration from continuous score and use Mantel–Haenszel test with matched data. example, studies determinants poor child growth World Health Organization’s definition stunting bei...

Information regarding the longitudinal effects of natural/environmental disasters on obstetrics outcomes is limited. This study aimed to analyze changes in over 8 years after Great East Japan Earthquake and Fukushima power plant accident. We used data from first Pregnancy Birth Survey by prefectural government, launched 2011. compared year divided Prefecture into six districts based administrat...

The Medical Specialization Education Entrance Examination is a national high-stake test for the placement of medical graduates in specialization training Turkey. purpose this study to determine whether items display gender-related differential item functioning (DIF) by using Mantel-Haenszel and logistic regression methods. To presence bias, content experts reviewed items. analyzes were conducte...