Effectiveness of custom seating and mobility services for individuals with disabilities in Guatemala.

The purpose of this study was to evaluate the effectiveness of custom seating and mobility services provided via an international service learning (ISL) model on the occupational performance of individuals with disabilities in Guatemala. A one-group prospective pretest-posttest design was implemented using the standardized Wheelchair Outcome Measure (WhOM - Spanish) administered on the day of wheelchair fitting, and at 3- and 6-month intervals after receiving seating and mobility services. A two-tailed t-test demonstrated a statistically significant (p < 0.001) improvement in satisfaction for in-home and out-of-home occupations for all participants (n = 71) at 3-months with a huge effect size (d > 2) and this improvement was maintained at the 6-month interval. The results were consistent for various areas of occupational performance (e.g. activities of daily living). The provision of customized seating and mobility services by occupational therapists through an ISL model demonstrated effectiveness at improving satisfaction with occupational performance for individuals with disabilities in Guatemala. Cultural humility, customization of equipment based on personal and environmental factors, inclusion of education and training, and collaboration with in-country partners were identified as contributors to positive outcomes.