Nikos Gorgoraptis1,2, Joanna Zaw-Linn2, Claire Feeney2,3, Carmen Tenorio-Jimenez2, Mari Niemi2, Aysha Malik2, Timothy Ham1,2, Anthony P Goldstone1,2,3, David J Sharp1,2. 1. Department of Neurology, Imperial College Healthcare NHS Trust, London, UK. 2. Department of Medicine, Computational, Cognitive and Clinical Neuroimaging Laboratory, Division of Brain Sciences, Imperial College London, Hammersmith Hospital, London, UK. 3. Imperial Centre for Endocrinology, Imperial College Healthcare NHS Trust, Charing Cross and St. Mary's Hospitals, London, UK.
Abstract
BACKGROUND: Cognitive impairment is a common and disabling consequence of traumatic brain injury (TBI) but its impact on health-related quality of life is not well understood. OBJECTIVE: To investigate the relationship between cognitive impairment and health-related quality of life (HRQoL) after TBI. METHODS: Retrospective, cross-sectional study of a specialist TBI outpatient clinic patient sample. OUTCOME MEASURES: Addenbrooke's Cognitive Examination Tool - Revised (ACE-R), and SF-36 quality of life, Beck Depression Inventory II (BDI-II), Pittsburgh Sleep Quality Index (PSQI) and Epworth Sleepiness Scale (ESS) questionnaires. RESULTS: 240 adults were assessed: n = 172 (71.7%) moderate-severe, 41 (23.8%) mild, 27 (11.3%) symptomatic TBI, 174 (72.5%) male, median age (range): 44 (22-91) years. TBI patients reported poorer scores on all domains of SF-36 compared to age-matched UK normative data. Cognitively impaired patients reported poorer HRQoL on the physical, social role and emotional role functioning, and mental health domains. Cognitive impairment predicted poorer HRQoL on the social and emotional role functioning domains, independently of depressive symptoms, sleep disturbance, daytime sleepiness and TBI severity. Mediation analysis revealed that the effect of depressive symptoms on the emotional role functioning domain of HRQoL was partially mediated by cognitive dysfunction. CONCLUSION: Cognitive impairment is associated with worse health-related quality of life after TBI and partially mediates the effect of depressive symptoms on emotional role functioning.
BACKGROUND:Cognitive impairment is a common and disabling consequence of traumatic brain injury (TBI) but its impact on health-related quality of life is not well understood. OBJECTIVE: To investigate the relationship between cognitive impairment and health-related quality of life (HRQoL) after TBI. METHODS: Retrospective, cross-sectional study of a specialist TBI outpatient clinic patient sample. OUTCOME MEASURES: Addenbrooke's Cognitive Examination Tool - Revised (ACE-R), and SF-36 quality of life, Beck Depression Inventory II (BDI-II), Pittsburgh Sleep Quality Index (PSQI) and Epworth Sleepiness Scale (ESS) questionnaires. RESULTS: 240 adults were assessed: n = 172 (71.7%) moderate-severe, 41 (23.8%) mild, 27 (11.3%) symptomatic TBI, 174 (72.5%) male, median age (range): 44 (22-91) years. TBI patients reported poorer scores on all domains of SF-36 compared to age-matched UK normative data. Cognitively impairedpatients reported poorer HRQoL on the physical, social role and emotional role functioning, and mental health domains. Cognitive impairment predicted poorer HRQoL on the social and emotional role functioning domains, independently of depressive symptoms, sleep disturbance, daytime sleepiness and TBI severity. Mediation analysis revealed that the effect of depressive symptoms on the emotional role functioning domain of HRQoL was partially mediated by cognitive dysfunction. CONCLUSION:Cognitive impairment is associated with worse health-related quality of life after TBI and partially mediates the effect of depressive symptoms on emotional role functioning.
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