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 :)

  • Kav10 Kav10
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    Very low bounty!

  • Kav10 Kav10
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    Hi. I can give you general guidance on your questions. Some of them are not very clear. You can tip me after. Sounds good?

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