Article Correctness Is Author's Responsibility: Functional independence after acquired brain injury: Prospective effects of health self-efficacy and cognitive impairment.

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Objective: To examine how health self-efficacy and cognitive impairment severity relate to functional independence after acquired brain injury (ABI). Design: Observational. Setting: Outpatient rehabilitation hospital. Participants: Seventy-five adults with predominately stroke or traumatic brain injury who were beginning a course of occupational therapy. Main Measures: Health self-efficacy was assessed with the Self-Rated Abilities for Health Practices. Cognitive functioning was assessed via a composite z score of neuropsychological tests. Trait affectivity was assessed with the Positive and Negative Affect Schedule. Functional independence was assessed with the Barthel Index and Lawton Instrumental Activities of Daily Living Scale. Results: Health self-efficacy correlated moderately with functional independence. A moderation threshold effect was detected that revealed for whom health self-efficacy predicted functional independence. Among participants with normal to mildly impaired cognition (>?2 z cognitive composite), health self-efficacy correlated positively with functional independence, which held after accounting for trait affectivity. In contrast, health self-efficacy was not correlated with functional independence among participants with greater impairment (