PURPOSE To control for confounding bias from non-random treatment assignment in observational data, both traditional multivariable models and more recently propensity score approaches have been applied. Our aim was to compare a propensity score-stratified model with a traditional multivariable-adjusted model, specifically in estimating survival of hemodialysis (HD) versus peritoneal dialysis (P...

The article discribe methods of verifing the conditions of access in computer systems based on Take-Grant protection model.

Weighted committee games generalize n-player simple voting games to m ≥ 3 alternatives. The committee’s aggregation rule treats votes anonymously but parties, shareholders, members of supranational organizations, etc. differ in their numbers of votes. Infinitely many vote distributions induce only finitely many distinct mappings from preference profiles to winners, i.e., non-equivalent committe...

hypertension, defined as a systolic/diastolic blood pressure of 140/90 mmhg or greater, is estimated to carry a three-fold increased risk of developing cardiovascular diseases (cvds). evidence from genome-wide association studies has identified an association between blood pressure and the gene encoding the folate-metabolising enzyme, methylenetetrahydrofolate reductase (mthfr). recent meta-ana...

This paper provides a demonstration of propensity-score matching estimation methods to evaluate the effectiveness of health-risk communication efforts. This study develops a two-stage regression model to investigate household and respondent characteristics as they contribute to aversion behavior to reduce exposure to arsenic-contaminated groundwater. The aversion activity under study is a house...

Using nationally representative survey data for Finnish employees linked to register data on their wages and work histories we find wage effects of high involvement management (HIM) practices are generally positive and significant. However, employees with better wage and work histories are more likely to enter HIM jobs. The wage premium falls substantially having accounted for employees’ work h...

Previous studies have documented that firms participating in Seasoned Equity Offerings (SEO) show substantial long-run stock underperformance. This finding poses one of the strongest challenges to the Efficient Market Hypothesis (EMH). However, other studies argue that these empirical studies are plagued by the inability of the matching techniques to properly control for all risk factors, and t...

OBJECTIVES Vancomycin and daptomycin are the two most frequently prescribed parenteral antimicrobials for resistant Gram-positive bacterial infections. The purpose of this study was to compare antimicrobial adverse event rates and associated healthcare interventions and healthcare utilization in patients treated with the two antimicrobials. METHODS All patients aged ≥18 years, discharged home...