Well-Beingを促進する作業への関わりの程度を評価できる等化尺度の開発

Development of the horizontal equating version in the Assessment of Positive Occupations

要旨：本研究では，精神障害者を対象にWell-Beingを促進する作業への関わりの程度を評価（Assessment of Positive Occupation；以下，APO）できるAPO等化尺度を開発した．方法は，Well-Beingの促進に寄与する50項目に対して項目反応理論の水平等化を用い，2種類の等化尺度を開発した．分析の結果，2種類の尺度は良好な結果（TLI：1.000，CFI：1.000，RMSEA：0.000）を示し，概ね同等の高い測定精度を有していることが示された．APO等化尺度は，作業療法実践で対象者の変化を的確に測定することができ，効果測定で一般化した結果を作業療法士に提示できることが考えられた．

　To promote the well-being of persons with mental disabilities, assistance in continuing community life is important. Therefore, occupational therapy (OT) is expected to perform effective treatments to increase client well-being. To support the well-being of the clients more effectively, it is necessary to assess the status of the clients' occupational participation. Thus, based on two studies we have developed an equalization scale that can generalize an intervention effect using item response theory. In study 1, in order to target the occupational therapists who are familiar with occupations that contribute to the promotion of well-being, 1) creation of the item pool, and 2) content validity of the study were conducted. 50 items (APO-50) regarding occupations were created which could contribute to the promotion of well-being. In study 2, mental disorders of individuals living in the community were targeted using a demographic questionnaire and the APO-50. Answers were based on the APO-50, and we developed the equalization scale through item response theory. As a result, the equalization scale with two types of high measurement accuracy has been developed (TLI:1.000, CFI:1.000, RMSEA:0.000). APO equalization scale accurately captured the changes in the client. In addition, APO equalization scale by item response theory effectively measured OT, and can be used to generalize the intervention results.