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Cited by 309

The DOI matches its Crossref record; 14 of the 14 references it cites were found in a registry or an index.

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

Yang, Min, Morin, Charles M., Schaefer, Kendyl, Wallenstein, Gene V.·2009·Current Medical Research and Opinion
DOI 10.1185/03007990903167415
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Abstract

OBJECTIVE: 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. METHODS: Data came from a randomized, placebo-controlled clinical trial evaluating the long-term efficacy of eszopiclone for primary insomnia (N = 828). Logistic regression models were used to characterize the relationship between ISI change scores (from baseline to 6 months post-treatment) and outcomes/anchors from the SF-36 Health Survey, Work Limitations Questionnaire (WLQ), and Fatigue Severity Scale (FSS). Odds ratios were derived from the regression coefficients to calculate the probability of a given outcome being associated with different ISI change scores. Convergence between anchor- and distribution-based estimates was assessed. RESULTS: Higher ISI scores (indicating more severe insomnia) were significantly associated with higher probabilities of negative outcome in all models. Individuals with a 6-point score reduction in ISI scores (which corresponded to 1(1/2) standard deviations) were 48% less likely to report 'feeling worn out' (SF-36) at 6 months, 46% less likely to be 'unable to think clearly' (WLQ), and 52% less likely to report 'feeling fatigued' (FSS). Similar results were found across a broad spectrum of all selected anchors. CONCLUSIONS: Based on results of the study, a 6-point reduction is recommended to represent a clinically meaningful improvement in individuals with primary insomnia. Research on generalizability of the recommended MID in this study to other patient populations and other type of treatment interventions is needed.

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Research works printed but not linked: 38

  1. 10.1185/030079905X65637 · DOI
  2. 10.1080/08098130802697269 · DOI
  3. American Psychiatric Association. Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision. Washington, DC, American Psychiatric Association, 2000
  4. Hatoum HT, 1998, A study of managed-care organization enrollees. Pharmacoeconomics, 14, 629
  5. 10.1016/j.jpsychores.2007.03.004 · DOI · Paper page
  6. 10.1093/sleep/29.9.1155 · DOI · Paper page
  7. 10.1016/S1087-0792(03)00060-1 · DOI
  8. 10.2165/00019053-200523090-00003 · DOI
  9. 10.1053/smrv.2002.0274 · DOI
  10. Beaton DE, 2001, J Rheumatol, 28, 400
  11. 10.1007/s11136-006-9109-9 · DOI · Paper page
  12. 10.1016/0197-2456(89)90005-6 · DOI · Paper page
  13. Schubert CR, 2002, Sleep, 25, 889
  14. 10.1007/BF01857869 · DOI
  15. 10.1016/S0033-3182(89)72248-9 · DOI
  16. Redeker NS, 2000, Sch Inq Nurs Pract, 14, 275, 10.1891/0889-7182.14.4.275 · DOI
  17. Shapiro CM, 2000, Semin Clin Neuropsychiatry, 5, 2
  18. 10.1016/S1098-3597(05)80003-1 · DOI
  19. 10.1001/archneur.1989.00520460115022 · DOI · Paper page
  20. Lichstein KL, 1994, Sleep, 17, 693, 10.1093/sleep/17.8.693 · DOI
  21. 10.1212/WNL.53.5.1151 · DOI
  22. 10.1186/1471-2377-6-27 · DOI
  23. Walsh JK, 1999, Sleep, 22, S386
  24. 10.2486/indhealth.43.11 · DOI
  25. 10.1097/00005650-200101000-00009 · DOI · Paper page
  26. 10.1016/S0895-4356(01)00424-3 · DOI
  27. 10.1097/00007632-200012150-00010 · DOI
  28. Walker N, 2005, J Rheumatol, 32, 1006
  29. 10.2165/00019053-200018050-00001 · DOI · Paper page
  30. 10.1097/00005650-200110000-00002 · DOI · Paper page
  31. 10.1081/COPD-200050663 · DOI
  32. 10.1097/00005650-199905000-00006 · DOI · Paper page
  33. 10.1016/S0895-4356(99)00071-2 · DOI · Paper page
  34. 10.1016/j.jclinepi.2007.03.012 · DOI · Paper page
  35. 10.1111/j.1475-6773.2007.00733.x · DOI
  36. 10.1185/030079907X178757 · DOI
  37. Steiner DL, Norman GR. Health Measurement Scales: A Practical Guide to Their Development and Use. Oxford: Oxford University Press, 1989
  38. Erman MK., 2001, J Clin Psychiatry, 62, 9

Cited by

Metadata

Authors
Yang, M., Morin, C. M., Schaefer, K., & Wallenstein, G. V.
Venue
Current Medical Research and Opinion
Publisher
Informa UK Limited
Published
2009-08-19
Volume
25
Issue
10
Pages
2487-2494
ISSN
  • 0300-7995 (ISSN-L)
  • 1473-4877
DOI
10.1185/03007990903167415
OpenAlex
W2062127507
Cited by
309
References
14
FWCI
4.82
Type
journal article
Language
en
Open access
closed

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