Development and validation of a Japanese version of the TRANSITION‐Q

Background The evaluation of transition readiness is indispensable for long‐term follow‐ups of adolescent patients with childhood‐onset chronic diseases (CCD). We developed a Japanese version of the TRANSITION‐Q (TRANSITION‐Q‐J) and used it to assess Japanese patients with CCD. Methods The TRANSITION‐Q‐J was developed through forward and backward translations followed by cognitive interviews with five adolescent patients. The field test was conducted with 125 adolescent patients, and a retest was conducted with 113 adolescent patients. Results Confirmatory factor analysis supported the two‐factor analysis model including F1 (communication and self‐management) and F2 (examination behavior). Sufficient internal consistency and test‐retest reliability were demonstrated among the total 14 items, F1, and F2 (Cronbach’s α > 0.80, intraclass correlation coefficient > 0.85). Convergent and discriminant validity for the 14 items and F1 were acceptable; however, F2 did not correlate significantly with the Rosenberg Self‐Esteem Scale and Independent Consciousness Scale. Regarding known‐groups validity, the older group had a significantly higher mean TRANSITION‐Q‐J score (50.05) than the younger group (43.28; P = 0.04). The same results were found for both F1 and F2. Conclusions The TRANSITION‐Q‐J for adolescent patients with CCD was developed and its reliability and validity were verified. This scale is easy to administer. In addition to being a tool for transition period support, it could be used to verify effective factors and in program outcome evaluation, including intervention studies.