The Health Enhancement Lifestyle Profile (HELP) was an assessment instrument for health-related behaviors and was translated into Japanese (HELP-J) using subjective rating scales. This study investigated the internal validity of the HELP-J using a Rasch analysis. Snowball and purposive sampling were used for data collection. The data obtained from the 109 respondents were subjected to Rasch analysis to assess their internal validity. The rating scale analysis supported a 3-category scale; five of the seven subscales showed unidimensionality. Thus, this study presents essential information on the possibility of translating the original HELP into Japanese and converting it into a unidimensional scale.
Keywords: Assessment; community-dwelling older adults, healthy lifestyle, Rasch analysis; subjective rating scale.