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drjunaid27

Re: HELP REQUIRED ~~

You can get help from

http://www.surveysystem.com/sscalc.htm

http://home.clara.net/sisa/sampshlp.htm

http://hedwig.mgh.harvard.edu/sample_size/size.html

Hope it will help you.

or you can discuss with some statician in your hospital or any institute if you want to know what does it really means

id_9112

HELP REQUIRED ~~

can anybody please tell me how to calculate the sample size for comparative studies??