Sample size calculators - File Exchange - MATLAB Central
Sampling Design for Impact Evaluation - ppt download
The SURVEYFREQ Procedure in SAS 9.2: Avoiding FREQuent Mistakes When Analyzing Survey Data ABSTRACT INTRODUCTION SURVEY DESIGN 101 WHY STRATIFY? - PDF Free Download
To explore prevalence of anxiety and depression in tension type headache how to calculate sample size in PSYCHIATRTY OPD in a general hospital?