PakMediNet Discussion Forum : Biostatistics : sample size calculation
sample size calculationsalam , my dissertation topic is comparison of placental histopathology in diabetes, it is comparative cross sectional study. prevalence is 20 percent. plz help me in calculating the sample size for it.
Posted by: 1012009Posts: 4 :: 29-04-2009 :: | Reply to this Message
Re: sample size calculation
Using formula for Estimating a population proportion with specified absolute precision
with Confidence interval of 95%
Population propotion 20%
Bond of error 5%
Sample size is: 246 patients
Posted by: docosamaPosts: 333 :: 29-04-2009 :: | Reply to this Message
Re: Re: sample size calculationthanx alot.
Posted by: 1012009Posts: 4 :: 01-05-2009 :: | Reply to this Message