Sample size calculation for a cross sectional healthcare study
I am currently working on a cross sectional study - An online survey will be distributed to healthcare workers to examine the current feeding practices on preterm babies. The sample size I obtained from an online software OpenEpi was 67 (CI 95%). Considering a 30% dropout rate, the final sample size needed for my study is 87. I am wondering if:
1. This number is sufficient for my study? Or if it's lacking?
2. Is the equation used in OpenEpi suitable for my study?
P.S. A very large sample size might be inappropriate d/t low response rate and limited available participants.
The attached picture is the print screen from OpenEpi. Appreciate any help. tqsm :)
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