title: [Test-retest variation in the Tokyo Metropolitan Institute of Gerontology Index of Competence in community-dwelling older people independent in daily living toward individual assessment of functional capacity].
abstract: OBJECTIVE
  To assess individual variation in the functional capacity of community-dwelling older people who are almost independent in daily living, using the Tokyo Metropolitan Institute of Gerontology Index of Competence (TMIG-Index of Competence).
  
  
  METHODS
  Out of 74 elderly outpatients showing a total score of TMIG-Index of Competence above 10 points at baseline, 61 who remained stable during subsequent two months in terms of medical and social aspects were assessed for their functional capacity with the test-retest method using the TMIG-Index of Competence. We assessed individual variation between the tests of one month interval with correspondence rate.
  
  
  RESULTS
  The ranges for score differences within which correspondence rates of 95% and over applied were as follows: within 1 point for the total score of the Index (95.1%), 0 point in the Instrumental Self-Maintenance subscale (IADL) (95.1%), and 1 point in the Intellectual Activity subscale (Intellectual Activity) (98.4%) and the Social Role subscale (Social Role) (98.3%).
  
  
  CONCLUSIONS
  The variation of 1 point for the total score of the Index, and subscales of Intellectual Activity and Social Role was regarded as a possible measurement error. In other words, variations of 2 points and over for total score, subscales of Intellectual Activity and Social Role, and variations of 1 point and over for IADL should not be ignored in screening of functional capacity among older people.
authors.affiliation: Community Health Research Group, Tokyo Metropolitan Institute of Gerontology.
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Fujiwara
authors.forename: Shoji
authors.initials: S
authors.lastname: Shinkai
authors.forename: Hidenori
authors.initials: H
authors.lastname: Amano
authors.forename: Shuichiro
authors.initials: S
authors.lastname: Watanabe
authors.forename: Shu
authors.initials: S
authors.lastname: Kumagai
authors.forename: Koji
authors.initials: K
authors.lastname: Takabayashi
authors.forename: Hiroto
authors.initials: H
authors.lastname: Yoshida
authors.forename: Tanji
authors.initials: T
authors.lastname: Hoshi
authors.forename: Masaharu
authors.initials: M
authors.lastname: Tanaka
authors.forename: Masahiro
authors.initials: M
authors.lastname: Morita
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Haga
mesh_terms: D000203:Activities of Daily Living; D000368:Aged / Q000502:physiology* / Q000523:psychology; D005260:Female; D006801:Humans; D007360:Intelligence; D007398:Interpersonal Relations; D008297:Male; D016743:Mental Competency / Q000592:standards