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drrathore
Re: Sample size for cross sectional studies
The best approach would be to study a book on biostats...This way you would have an indepth grasp of the concepts and would help you a lot in future research...
In case you need an easy way out, following links might be useful
http://www.sportsci.org/resource/stats/validappl.html
http://www.oandp.org/jpo/library/1995_04_137.asp
Regards
tariqasl
Sample size for cross sectional studies
How to calculate sample size for cross sectional studies.