Noelle E Carlozzi1, Phillip A Ianni2, David S Tulsky3, Tracey A Brickell4, Rael T Lange5, Louis M French4, David Cella6, Michael A Kallen6, Jennifer A Miner2, Anna L Kratz2. 1. Department of Physical Medicine and Rehabilitation, University of Michigan, Ann Arbor, MI. Electronic address: carlozzi@med.umich.edu. 2. Department of Physical Medicine and Rehabilitation, University of Michigan, Ann Arbor, MI. 3. Center for Assessment Research and Translation, Department of Psychological and Brain Sciences, University of Delaware, Newark, DE. 4. Defense and Veterans Brain Injury Center, Walter Reed National Military Medical Center, Bethesda, MD; National Intrepid Center of Excellence, Walter Reed National Military Medical Center, Bethesda, MD; Uniformed Services University of the Health Sciences, Bethesda, MD. 5. Defense and Veterans Brain Injury Center, Walter Reed National Military Medical Center, Bethesda, MD; National Intrepid Center of Excellence, Walter Reed National Military Medical Center, Bethesda, MD; University of British Columbia, Vancouver, British Columbia, Canada. 6. Department of Medical Social Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL.
Abstract
OBJECTIVE: To examine the reliability and validity of Patient-Reported Outcomes Measurement Information System (PROMIS) measures of sleep disturbance and fatigue in traumatic brain injury (TBI) caregivers and to determine the severity of fatigue and sleep disturbance in these caregivers. DESIGN: Cross-sectional survey data collected through an online data capture platform. SETTING: A total of 4 rehabilitation hospitals and Walter Reed National Military Medical Center. PARTICIPANTS: Caregivers (N=560) of civilians (n=344) and service member/veterans (SMVs) (n=216) with TBI. INTERVENTION: Not applicable. MAIN OUTCOME MEASURES: PROMIS sleep and fatigue measures administered as both computerized adaptive tests (CATs) and 4-item short forms (SFs). RESULTS: For both samples, floor and ceiling effects for the PROMIS measures were low (<11%), internal consistency was very good (all α≥0.80), and test-retest reliability was acceptable (all r≥0.70 except for the fatigue CAT in the SMV sample r=0.63). Convergent validity was supported by moderate correlations between the PROMIS and related measures. Discriminant validity was supported by low correlations between PROMIS measures and measures of dissimilar constructs. PROMIS scores indicated significantly worse sleep and fatigue for those caring for someone with high levels versus low levels of impairment. CONCLUSIONS: Findings support the reliability and validity of the PROMIS CAT and SF measures of sleep disturbance and fatigue in caregivers of civilians and SMVs with TBI.
OBJECTIVE: To examine the reliability and validity of Patient-Reported Outcomes Measurement Information System (PROMIS) measures of sleep disturbance and fatigue in traumatic brain injury (TBI) caregivers and to determine the severity of fatigue and sleep disturbance in these caregivers. DESIGN: Cross-sectional survey data collected through an online data capture platform. SETTING: A total of 4 rehabilitation hospitals and Walter Reed National Military Medical Center. PARTICIPANTS: Caregivers (N=560) of civilians (n=344) and service member/veterans (SMVs) (n=216) with TBI. INTERVENTION: Not applicable. MAIN OUTCOME MEASURES: PROMIS sleep and fatigue measures administered as both computerized adaptive tests (CATs) and 4-item short forms (SFs). RESULTS: For both samples, floor and ceiling effects for the PROMIS measures were low (<11%), internal consistency was very good (all α≥0.80), and test-retest reliability was acceptable (all r≥0.70 except for the fatigue CAT in the SMV sample r=0.63). Convergent validity was supported by moderate correlations between the PROMIS and related measures. Discriminant validity was supported by low correlations between PROMIS measures and measures of dissimilar constructs. PROMIS scores indicated significantly worse sleep and fatigue for those caring for someone with high levels versus low levels of impairment. CONCLUSIONS: Findings support the reliability and validity of the PROMIS CAT and SF measures of sleep disturbance and fatigue in caregivers of civilians and SMVs with TBI.
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