title: [Changes in ability- and performance-based IADL among community-dwelling elderly].
abstract: OBJECTIVE
  We examined changes in ability- and performance-based instrumental activities of daily living (IADL) among community-dwelling elderly a year after a baseline survey was taken.
  
  
  METHODS
  Community-dwelling elderly in Otama village were interviewed in 2006 and followed for one year. Based on ability- and performance-based IADL assessments regarding 3 daily tasks from the Kihon Checklist (using public transportation, shopping for daily necessities, and managing bank accounts), each was assigned to one of three performance groups: good, borderline, or low.
  
  
  RESULTS
  One year after the survey, the proportion of those assigned to the good performance group decreased, while those assigned to either the borderline or low performance groups increased. Among those assigned to the good performance group, 75.6% remained in that group, 21.1% shifted to the borderline performance group, and 3.3% shifted to the low performance group one year later. Compared to those remaining in the good performance group, those who shifted to the borderline performance group had significantly lower muscular strength, less healthy attitudes, and lower IADL as measured by the Tokyo metropolitan Institute of Gerontology (TMIG) Index of Competence.
  
  
  CONCLUSIONS
  Fewer elderly were assigned to the good performance group and more were assigned to the borderline and low performance groups one year after the survey. Shifts from the good to borderline performance group were common among those with lower physical status and less healthy attitudes. We conclude that ability- and performance-based evaluations are important tools to screen those in the borderline performance group requiring preventive care.
authors.affiliation: Department of Public Health, Fukushima Medical University, School of Medicine.
authors.forename: Naoko
authors.initials: N
authors.lastname: Suzuki
authors.forename: Aya
authors.initials: A
authors.lastname: Goto
authors.forename: Hirohide
authors.initials: H
authors.lastname: Yokokawa
authors.forename: Seiji
authors.initials: S
authors.lastname: Yasumura
mesh_terms: D000203:Activities of Daily Living; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D007564:Japan; D008297:Male