Journal
ARCHIVES OF PHYSICAL MEDICINE AND REHABILITATION
Volume 93, Issue 10, Pages 1832-1837Publisher
W B SAUNDERS CO-ELSEVIER INC
DOI: 10.1016/j.apmr.2012.03.025
Keywords
Life satisfaction; Psychometrics; Quality of life; Rehabilitation; Spinal cord injuries; Validation studies; Well-being
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Funding
- Dutch Health Research and Development Council, ZON-MW Rehabilitation program [1435.0003, 1435.0025]
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Objective: To assess and compare the validity of 3 life satisfaction instruments in persons with spinal cord injury (SCI). Design: Cross-sectional study 5 years after discharge from inpatient rehabilitation. Setting: Eight rehabilitation centers with specialized SCI units. Participants: Persons (N=225) with recently acquired SCI between 18 and 65 years of age were included in a cohort study. Data were available for 145 persons 5 years after discharge. Interventions: Not applicable. Main Outcome Measures: The Life Satisfaction questions (LS Questions), the Life Satisfaction Questionnaire (LiSat-9), and the Satisfaction With Life Scale (SWLS). Results: There were no floor or ceiling effects. Cronbach alpha was questionable for the LS Questions (.60), satisfactory for the LiSat-9 (.75), and good for the SWLS (.83). Concurrent validity was shown by strong and significant Spearman correlations (.59-.60) between all 3 life satisfaction instruments. Correlations with measures of mental health and participation were .52 to .56 for the LS Questions, .45 to .52 for the LiSat-9, and .41 to .48 for the SWLS. Divergent validity was shown by weak and in part nonsignificant correlations between the 3 life satisfaction measures and measures of functional independence and lesion characteristics. Conclusions: Overall, the validity of all 3 life satisfaction measures was supported. Despite questionable internal consistency, the concurrent and divergent validity of the LS Questions was at least as good as the validity of the LiSat-9 and the SWLS.
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