Preparation, Reliability, and Validity of a Japanese Version of the "Satisfaction of Treatment among Caregivers of Dependent Type 2 Diabetic Patients" Questionnaire.

The aim of this study was to prepare a Japanese version of the "Satisfaction of Treatment among Caregivers of Dependent Type 2 Diabetic Patients" (STCD-J) questionnaire, which is used to assess the satisfaction of family caregivers with respect to the treatment for elderly patients with type 2 diabetes mellitus who require support. In addition, the reliability and validity of the STCD-J questionnaire were analyzed. A Japanese version of the original STCD questionnaire was prepared, revised, and back-translated; the back-translated version was sent to the authors of the original version for confirmation. Family caregivers of patients with type 2 diabetes mellitus aged ≥65 years who regularly underwent medical examinations at the diabetes mellitus outpatient clinic of Ise Red Cross Hospital were included. Cronbach's coefficient was calculated to assess internal consistency. Exploratory factor analyses were performed to assess construct validity, and Pearson's correlation coefficients between STCD-J score and HbA1c as well as the degree of satisfaction with patients' blood glucose levels, depression, and negative self-assessment of nursing care were calculated to assess criterion-related validity. This study included 208 individuals (55 males and 153 females). Cronbach's coefficient was 0.88. Factor analyses showed a single-factor structure both with and without rotation. The STCD-J scores were significantly inversely correlated with HbA1c ( = -0.27, < 0.001). Significant correlations were observed between the STCD-J scores and degree of satisfaction with patients' blood glucose levels ( = 0.43, < 0.001), depression ( = -0.20, = 0.003), and negative self-assessment of nursing care ( = -0.19, = 0.004). The reliability and validity of the STCD-J questionnaire were confirmed. The STCD-J questionnaire can be used in Japan as a tool to assess the satisfaction of family caregivers with the treatment of elderly patients with type 2 diabetes mellitus requiring support.