2023 Volume 19 Issue 1 Pages 46-54
Aims: This study aimed to validate the Assessment of Positive Occupation 15 (APO-15) by differential item functioning (DIF) and differential test functioning (DTF).
Method: Participants were to obtain research cooperation from individual clinics, community healthcare institutions, and home-visit rehabilitation services. The inclusion criteria for participants were people between the ages of 20 and 90 years who were diagnosed with mental illness, physical illness, or geriatric illness and agreed to participate in the study. In this study, the face sheet and APO-15 were distributed to the participants, and they were asked to respond.
Results: A total of 3003 participants were included in this study. The mean age was 67.41 (±16.63) years (≥ 75; 1168 and ≤ 74; 1835). Regarding the gender of participants, 1565 were males and 1438 were females. Considering illness, 1184 participants had a mental illness, 897 had a physical illness, and 922 had a geriatric illness. The results of the DIF and DTF suggested that the APO-15 did not differ in the response pattern of the scale due to the influence of subgroups (illness, gender, and age).
Conclusion: The APO-15 suggests the potential to provide measurement results with a good level of scale validity and robustness.
