“…26,27 Level of Independence Level of independence was evaluated by the Kahoku Aging Longitudinal Study Scale (KALS), which qualitatively evaluates the cognition and activities of the elderly in 12 areas. 28 These areas are walking, going upstairs/downstairs, eating, washing, use of toilet, bathing, dressing, taking medicine, seeing, hearing, conversing, and using the telephone. Each activity was rated on a 4-point scale (0: dependent, 1-2: some help, 3: independent).…”