Smallest detectable difference (SDD)
Angst
F, Aeschlimann A et al. Smallest detectable and minimal clinically important
differences of rehabilitation intervention with their implications for
required sample sizes using WOMAC and SF-36 quality of life
measurement instruments in patients with osteoarthritis of the lower
extremities. Arthritis Rheum 2001;45:384-91.
ES
n
0.80
25
0.50
63
0.20 395