Interventions Within the Scope of Occupational Therapy to Address Preventable Adverse Events in Inpatient and Home Health Postacute Care Settings: A Systematic Review

Moderating Effects of Informal Care on the Relationship Between ADL Limitations and Adverse Outcomes in Stroke Survivors

BACKGROUND

Stroke survivors with limitations in activities of daily living (ADL) have a greater risk of experiencing falls, hospitalizations, or physical function decline. We examined how informal caregiving received in hours per week by stroke survivors moderated the relationship between ADL limitations and adverse outcomes.

METHODS

In this retrospective cohort, community-dwelling participants were extracted from the National Health and Aging Trends Study (2011-2020; n=277) and included if they had at least 1 formal or informal caregiver and reported an incident stroke in the prior year. Participants reported the amount of informal caregiving received in the month prior (low [<5.8], moderate [5.8-27.1], and high [27.2-350.4] hours per week) and their number of ADL limitations (ranging from 0 to 7). Participants were surveyed 1 year later to determine the number of adverse outcomes (ie, falls, hospitalizations, and physical function decline) experienced over the year. Poisson regression coefficients were converted to average marginal effects and estimated the moderating effects of informal caregiving hours per week on the relationship between ADL limitations and adverse outcomes.

RESULTS

Stroke survivors were 69.7% White, 54.5% female, with an average age of 80.5 (SD, 7.6) years and 1.2 adverse outcomes at 2 years after the incident stroke. The relationships between informal caregiving hours and adverse outcomes and between ADL limitations and adverse outcomes were positive. The interaction between informal caregiving hours per week and ADL limitations indicated that those who received the lowest amount of informal caregiving had a rate of 0.12 more adverse outcomes per ADL (average marginal effect, 0.12 [95% CI, 0.005-0.23]; P=0.041) than those who received the highest amounts.

CONCLUSIONS

Informal caregiving hours moderated the relationship between ADL limitations and adverse outcomes in this sample of community-based stroke survivors. Higher amounts relative to lower amounts of informal caregiving hours per week may be protective by decreasing the rate of adverse outcomes per ADL limitation.

Health Services Research and Occupational Therapy: Ensuring Quality and Cost-Effectiveness

Health services research focuses on access, quality, and cost-effectiveness of care. As a result of increasing emphasis on value-based reimbursement models, conducting health services research to demonstrate the value of occupational therapy is timely. This special issue serves to highlight health services research relevant to occupational therapy practice. Articles included in this special issue describe (1) clients' access to and use of occupational therapy, (2) the effects of occupational therapy on important quality-of-care indicators and client outcomes, and (3) the value of occupational therapy services through the lens of cost-effectiveness. This special issue illustrates the state of health services research in the field of occupational therapy and reveals key insights to advance occupational therapy practice using health services research.