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Journal of Clinical and
Translational Research Greek propolis use in COVID-19: Trial protocol
Figure A2. Power calculations based on Schoenfeld’s formula
Notes: Schoenfeld’s formula, n = (z + Z ) /[{log(λ /λ )} P P d]; Sample size calculation through Sample size calculator, version 1.058 .
2
2
20
21
0
0
1
1−α
β
1
Source: https://homepage.univie.ac.at/robin.ristl/samplesize.php?test=logrank.
Volume 11 Issue 3 (2025) 49 doi: 10.36922/jctr.24.00073
