Assessment of Functional Status with an Extended ADL Scale. (1) A General Population Sample of Community Elderly.

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  • 拡大ＡＤＬ尺度による機能的状態の評価　（１）　地域高齢者
  • カクダイ ADL シャクド ニ ヨル キノウテキ ジョウタイ ノ ヒョウカ 1
  • (1) A General Population Sample of Community Elderly
  • (1)地域高齢者

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Abstract

An extended scale for activities of daily living (ADL) was constructed and administered to a community-based sample of 2591 persons aged 65 years and older. The scale consisted of 10 basic ADL items (Feeding, Moving from wheelchair to bed and return, Personal toilet, Getting on and off toilet, Bathing self, Walking on level surface, Ascend and descend stairs, Dressing, Controlling bowels, and Controlling bladder) taken from the Barthel Index and 5 instrumental ADL items (Using public transportation, Preparing meals, Shopping for daily necessities, Paying bills, and Managing deposits) from the TMIG Index of Competence. Data were obtained by self-reports and the responses of each item were transformed into dichotomous form, according to whether independent or dependent. Factor analysis of the items revealed a unidimensional structure, accounted for 55.3% of the total variance. Scalogram analysis produced the coefficient of reproducibility of 0.96 and the coefficient of scalability of 0.63, met the Guttman's and Menzel's criteria for unidimensionality and cumulativeness. Testing the scalability for each item with Mokken scale analysis, 3 items (Controlling bowels and bladder, and Paying bills) were dropped. The resulting 12-item version had the coefficients of reproducibility of 0.97, Menzel's scalability of 0.75 and Mokken's scalability of 0.85. The KR-20 reliability coefficient of internal consistency was 0.90. The scores on the 12-item version were significantly correlated with age (r=-0.34) but not significantly different between males and females. The criterion-related validity of the scale was satisfactory when assessed in terms of perceived health status and hospital utilization. It was concluded that the extended ADL scale developed in the course of the present study should be useful for assessment of functional status in the elderly living home.

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