Objective: In the TRANS–IBD clinical trial, the outcomes are measured with selected
validated questionnaires. Cross-cultural and age adaptations of the Self-Efficacy
Scale for adolescents and young adults (IBD–SES), the Transition Readiness Assessment
Questionnaire (TRAQ), and the Self-Management and Transition Readiness Questionnaire
(STARx) were performed. Methods: Linguistic and cultural adaptation was carried out
with the usage of reliability coefficients (Cronbach’s α coefficients, Spearman’s
rank correlation), and with confirmatory factor analysis (CFA; root Mean Square Error
of Approximation [RMSEA], Comparative Fit Index [CFI], and Tucker-Lewis Index [TLI]).
Results: 112 adolescents participated in the study (45.5% male, mean age 17 ± 1.98
years). CFA was acceptable in the IBD–SES and the TRAQ. Internal consistency was acceptable
in IBD–SES and good in TRAQ (0.729; 0.865, respectively). Test–retest reliability
was good in IBD–SES, but below the acceptable threshold in TRAQ (ρ = 0.819; ρ = 0.034).
In STARx tools, RMSEA showed poor fit values, CFI and TLI were below acceptable fit
values, and internal consistency was not satisfied (0.415; 0.693, respectively), while
test–retest reliabilities were acceptable (ρ = 0.787; ρ = 0.788, respectively). Conclusions:
Cross-cultural, age-specific adaptation was successfully completed with IBD–SES and
TRAQ. Those are comparable to the original validated versions. The adaption of the
STARx tools was not successful.
