From: RADAR – A ra ndomised, multi-centre, prospective study comparing best medical treatment versus best medical treatment plus renal artery stenting in patients with haemod ynamically relevant atherosclerotic renal ar tery stenosis
Expectation value
Relev.
Variance1/2
Sig. level
Statistical
Sample
Therapy
Ref.
Min. diff.
level
k =
1-sided
power
size
mueT
mueC
Delta
delta
sigmaT
sigmaC
nT/nC
alpha = 0.05
1-beta
N = nT+ nC
5.5
-1.0
6.5
2.0
14.0
1.50
1
0.80
250