English to Dutch Medical Medical (general) onderzoeksprotocol

In een onderzoeksprotocol staat deze zin en ik weet niet precies hoe ik hem moet vertalen:


For 90% overall power, number per group = 19.


Context:

Time to Complete eschar removal
Based on calculated Hazard Ratio (HR) from stud y[...] for ****90% overall power, number per group = 16****.
Percent area of wound excised
Estimated difference in mean percent wound excised from study [...] ([...] vs. SOC) = 15.1 – 59.6 = 44.5.
*****For 90% overall power, number per group = 19.****
Cosmesis and Function
Estimated difference in MVSS at 24 months from previous study ([...] vs. SOC) = 3.32 – 3.83 = 0.51.