Comparing the Responsiveness of the Assessment of Motor and Process Skills and the Functional Independence Measure

Background. Selecting and utilizing appropriate assessments to evaluate outcomes is an important aspect of evidence-based occupational therapy practice. The Functional Independence Measure (FIM), to which occupational therapists contribute motor and cognitive scores, is currently the only required assessment for evaluating change from admission to discharge on an inpatient rehabilitation unit. However, occupational therapists are also using the motor and process scales from the Assessment of Motor and Process Skills (AMPS) to assess clients and evaluate change. Purpose. To compare responsiveness of the AMPS and the FIM on an inpatient rehabilitation unit. Methods. A retrospective chart review of AMPS measures and FIM scores at admission and discharge was undertaken. Standardized response means and effect sizes were calculated to estimate responsiveness. Findings. No significant difference was found in the ability of the AMPS motor and FIM motor scales to detect change. The AMPS process scale was more responsive to change than the FIM cognitive scale. Implications. Using the AMPS as an assessment to evaluate outcomes allows practitioners to detect changes that may not be detected through the exclusive use of the FIM.