Asai Mariko, Fujimori Maiko, Kamo Yuiko, Hillen Marij A, Oishi Takayuki, Miyashita Mitsunori, Mori Masanori, Morita Tatsuya, Uchitomi Yosuke
Division of Survivorship Research, National Cancer Centre Institute for Cancer Control, Tokyo, Japan.
Department of Medical Psychology, Nippon Medical School, Tokyo, Japan.
Palliat Support Care. 2023 Jul 25:1-8. doi: 10.1017/S1478951523000937.
This study aimed to validate the Japanese versions of the Trust in Oncologist Scale (TiOS-J) and the TiOS-Short Form (TiOS-SF-J).
A cross-sectional web-based survey was conducted among cancer patients in Japan. The forward-backward translation method was used to develop the TiOS-J. The web-based survey was mailed to 633 people, of whom 309 responded. After 2 weeks, 103 among the 156 first-time respondents completed the second survey to verify the reliability of the retest method. The validity was evaluated by exploratory factor analysis (EFA), confirmatory factor analysis (CFA), Spearman's correlation coefficients between the Patient Satisfaction Questionnaire-Japanese, willingness to recommend the oncologist, trust in health care, and number of oncological consultations. To evaluate reliability, Cronbach's and test-retest correlation were calculated.
The theoretically driven four-factor model and the EFA-driven one-factor model of the full-form TiOS-J (18 items) did not result in an acceptable fit; however, CFA supported the one-dimensionality of the 5 items from the TiOS-SF-J ( (5) = 12.36, = 0.03, goodness-of-fit index = 0.984, adjusted goodness-of-fit index = 0.952, comparative fit index = 0.991, and root mean square error of approximation = 0.069). With regard to the reliability of TiOS-J and TiOS-SF-J, the Cronbach's alpha values were 0.94 and 0.89, respectively; the test-retest values were 0.82 and 0.78.
This study indicated that the TiOS-J and TiOS-SF-J are valid and reliable instruments for measuring patients' trust in their oncologists and can be used to assess trust in oncologists for both clinical and research purposes.
本研究旨在验证日本版肿瘤学家信任量表（TiOS-J）和TiOS简表（TiOS-SF-J）。
在日本癌症患者中开展了一项基于网络的横断面调查。采用前后翻译法开发TiOS-J。通过网络调查向633人发送问卷，其中309人回复。两周后，156名首次回复者中的103人完成了第二次调查，以验证重测法的可靠性。通过探索性因素分析（EFA）、验证性因素分析（CFA）、患者满意度问卷-日本版、推荐肿瘤学家的意愿、对医疗保健的信任以及肿瘤咨询次数之间的斯皮尔曼相关系数来评估效度。为评估信度，计算了克朗巴哈系数和重测相关性。
TiOS-J完整版（18项）的理论驱动四因素模型和EFA驱动单因素模型拟合度均不理想；然而，CFA支持TiOS-SF-J中5个条目的一维性（χ²(5)=12.36，p = 0.03，拟合优度指数 = 0.984，调整后拟合优度指数 = 0.952，比较拟合指数 = 0.991，近似均方根误差 = 0.069）。关于TiOS-J和TiOS-SF-J的信度，克朗巴哈α系数分别为0.94和0.89；重测值分别为0.82和分别为0.78。
本研究表明，TiOS-J和TiOS-SF-J是测量患者对肿瘤学家信任程度的有效且可靠工具，可用于临床和研究目的的肿瘤学家信任评估。
