The Effect of Proton Pump Inhibitors on the Prevalence of Clostridium difficile Infection

Comparison of Variance Estimations of Logistic Regression Models Produced by SAS, SUDAAN, and WesVarPC

Comparative Analysis of Four Intraclass Correlation Coefficient Estimation Methods on Continuous Outcomes in a Survey Study

Exploratory Factor Analysis of DISC-IV Impairment for ADHD Diagnosis

Methods in Measuring Surveillance Disease Data Quality, Somalia

Predicting Low Back Pain Following Lumbar Interbody Fusion: A Comparison of Multivariate Model Selection Criteria

Comparison of Two Survey Method based on Response Distribution: Mail versus Telephone