Simple as possible? Or too simple? Possible limits to the universality of the one half standard deviation.
Beaton
Dorcas E
DE
Mobility Program Clinical Research Unit, St. Michael's Hospital, Toronto, Ontario, Canada.
D003627:Data Interpretation, Statistical; D006801:Humans; D011594:Psychometrics; D011788:Quality of Life; D020377:Self Efficacy; D018434:Sickness Impact Profile; D011795:Surveys and Questionnaires; D016896:Treatment Outcome