power calculation for clinical audit

[Al Atlas]

Hi. I just want to know if I need to do power calculation for clinical audit studies and if I can use STATA to do it. Thank you.

[Joseph Coveney]

From the appendix of this guidance document on clinical audits, it seems as if you could compute sample size with a hand calculator. See the help file for what Stata has to offer. Invert the test to get the confidence interval.

[Marcos Almeida]

Hi "epiboy99" (please insert your name and surname),

In Stata 13 you have a full set of commands (and also windows from the dropw down menu) to perform power and sample size estimations.

Just click on "Statistics", then on "Power and Sample Size".

[Marcos Almeida]

Hi "epiboy99" (please insert your name and surname),

In Stata 13 you have a full set of commands (and also windows from the drop down menu) to perform power and sample size estimations.

Just click on "Statistics", then on "Power and Sample Size".