Variability and sample size requirements for health-related quality-of-life measures: understanding the challenges facing investigators.
Coens
Corneel
C
Bottomley
Andrew
A
Efficace
Fabio
F
Flechtner
Henning
H
Aaronson
Neil
N
D006801:Humans; D009369:Neoplasms; D011788:Quality of Life; D015203:Reproducibility of Results; D018401:Sample Size; D011795:Surveys and Questionnaires