Validation and translation of the Kihon Checklist (frailty index) into Brazilian Portuguese

Aim To translate the Japanese Kihon Checklist (frailty index) into the Portuguese language, and to validate the use of the checklist for the assessment of the elderly Brazilian population. Methods A semantic analysis was carried out, along with pretesting of bilingual participants. The checklist was validated against the Edmonton Frail Scale. Results A total of 188 Brazilian older adults (mean age 69.5 ± 7.47 years) participated in the present study. In the semantic analysis, six elderly participants reported no difficulty with responding to the Portuguese version of the Kihon Checklist. During pretesting with 21 bilingual participants, we found a strong correlation between the total scores of the original version of the Kihon Checklist in Japanese and the translated version in Portuguese (r = 0.764, P