The present study aimed to verify the reliability and validity of the Assessment of Positive Occupation 15 (APO-15) in elderly individuals with physical disabilities in health science.
The study sample comprised 761 elderly individuals with physical disabilities residing in community dwellings, hospitals, and group homes. They completed the APO-15 and Kessler Psychological Distress Scale (K6) evaluations. We analyzed the psychometric properties of the APO-15, polyserial correlation coefficient, and average extracted variance, which included a confirmatory factor analysis (CFA), entropy, Cronbach’s α coefficient, Pearson’s product–moment correlation coefficient, item response theory (IRT), cut-off point, and latent rank values.
The study outcome supported the APO-15, a 15-item, 4-factor model incorporating positive relationships, achievement, meaning, and engagement. The validity of this model was supported by various results; for example, each item score of polyserial correlation coefficient and entropy of APO-15 was the reference value was confirmed as being higher. The structural validity of APO-15 was assessed by CFA, which indicated a good model fit. Hypothesis testing revealed good values for the convergent and discriminant validity of the APO-15, and Cronbach’s α coefficient analysis revealed acceptable internal consistency. These results showed that the 4-factor structure of APO-15, which assumes has been established. Cut-off points for APO-15 of 51-point sensitivity (0.512) and specificity (0.704) yielded good results. The latent rank theory of APO-15 exhibited a good fit in all four rank values. The item reference profile suggested that an effective occupation promotes well-being.
The APO-15 exhibited good psychometric properties with respect to measuring positive occupations in individuals, including elderly individuals, with physical disabilities. This important tool will facilitate participation in occupations that promote daily well-being.