がん治療に対する納得の尺度開発

Development of a Cancer Treatment Acceptance Scale

要旨

　目的：患者が納得してがん治療を受けることは，治療完遂に向けて重要な視点である．本研究ではがん治療に対する納得の尺度を開発し，信頼性と妥当性を検討した．

　方法：がん治療を受けているがん患者294名を対象に質問紙調査を実施し，内容的，本質的，構造的，一般化可能性，外的側面からの証拠を検討した．

　結果：235名から回答が得られ（回収率79.9％），有効回答の210名を分析対象とした．開発した尺度の信頼性と妥当性の検証において，項目分析を行い最終的に28項目で因子分析を行った．その結果，【治療する価値】【治療への前向きな気持ち】の2因子18項目が抽出された．モデルの適合度はGFI = .901，AGFI = .853，CFI = .919，RMSE = .049であり，Decisional Conflict Scaleとの相関はr = -.589〜-.667であり，各因子のクロンバックα係数は .915〜.945であった．

　結論：がん治療に対する納得の尺度18項目2因子構造を開発し，信頼性と妥当性が確保できた．

　Objective: This study aims to develop a scale for measuring cancer treatment acceptance and to examine its reliability and validity, which will help patient accept and complete cancer treatment.

　Methods: A questionnaire survey was conducted, involving 294 cancer patients receiving treatment. The reliability and validity of the developed cancer treatment acceptance scale were confirmed by examining evidence in content, from substantive, structural, generalizability, and external aspects.

　Results: Responses were obtained from 235 patients (response rate: 79.9%), and 210, who returned valid responses, were analyzed. To verify the reliability and validity of the scale, item analysis was performed. Through factor analysis for 28 items finally adopted, 2 factors, [the value of treatment] and [a positive feeling about treatment], and 18 items were identified. The goodness of fit of this model was represented by GFI = 0.901, AGFI = 0.853, CFI = 0.919, and RMSE = 0.049. The correlation coefficient with Decisional Conflict Scale was r = -0.589 to -0.667. Cronbach's alpha for each factor ranged from 0.915 to 0.945.

　Conclusions: We developed a scale consisting of 2 factors with 18 items to measure cancer treatment acceptance and confirmed its reliability and validity.