LPRF for Chronic Wounds

LPRF (Leukocyteplatelet rich fibrin) is a second generation platelet
reach concentrate where autologous platelets and leukocytes are present in
a 3D fibr...
Sample size calculation : Single group cohort
Minimum sample size required can be calculated using the formula:
N=σ2(z1−β+z1−α/2)2(μ0−μ1)2μ0 = population mean
μ1 = mean of study population
N = sample size of study population
σ = variance of study population
α = probability of type I error (usually 0.05)
β = probability of type II error (usually 0.2)
z = critical Z value for a given α or β
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MD, MS, PhD Thesis, Proposal and Medical Research Guide from Epomedicine  Word formatting, Sample size calculation, Referencing, Reference manager and Calculators.
Epomedicine August 13, 2020
Suppose, the mean outcome of an intervention is 265 and SD is 9 and the expected mean of outcome of the study is 260. Using alpha as 0.05 and beta as 0.2.
N = 25 (using the formula above)
Source: https://clincalc.com/stats/samplesize.aspx