Health and disability
Subjective satisfaction was measured using the WHOQOL-BREF [Objective performance was measured using the WHODAS2.0-J. The WHODAS2.0-J is a reliable and valid instrument for the assessment of function among the older Japanese population [The WHOQOL-BREF is used to measure subjective well-being based on patient satisfaction with performing routine activities, while the WHODAS2.0-J is used to measure the feasibility of performing activities of daily living in terms of physical function [