Updated in 3/18/2012 3:23:56 AM      Viewed: 123 times      (Journal Article)
Current medical research and opinion 25 (10): 2487-94 (2009)

Interpreting score differences in the Insomnia Severity Index: using health-related outcomes to define the minimally important difference.

Min Yang , Charles M Morin , Kendyl Schaefer , Gene V Wallenstein
ABSTRACT
To estimate the minimally important difference (MID) for the Insomnia Severity Index (ISI) by examining the association of score differences of the ISI with health-related outcomes including health-related quality of life, productivity, and fatigue.
DOI: 10.1185/03007990903167415      ISSN: 0300-7995