title: The change in lifestyle data during 9 years: the reliability and continuity of baseline health practices.
abstract: OBJECTIVE
  To reveal change patterns in self-reported lifestyle data for 9 years, and examine the characteristics of changes by type of lifestyle and ageing.
  
  
  METHODS
  The authors used the lifestyle data of 7,080 male workers aged 20-59 who received checkups for 9 years. The proportions of change patterns during the 9 years were determined in seven health practices; smoking, eating breakfast, sleeping hours, working hours, physical exercise, eating nutritional balanced diets, and mental stress.
  
  
  RESULTS
  Among seven health practices, the keep rate of good health practice was highest for the non-smoking (90.8 %), followed by eating breakfast (69.0 %);and the lowest was physical exercise (13.7 %). The keep rate of poor health practice was highest for smoking (73.8 %), followed by non-physical exercise (67.1 %). The lowest rate of multiple changes during 10 years was smoking (7.1 %); the highest was mental stress (68.5 %).
  
  
  CONCLUSIONS
  As for the life style on smoking and eating breakfast seemed to be stable, using the data obtained at a specific point in time wouldn't much affect the results. On the contrary, for other life styles, they showed poor continuity during 9 years, so it would be necessary to take into consideration the time point of data collection.
authors.affiliation: Course of Health Science, Osaka University Graduate School of Medicine, 1-7 Yamadaoka, Suita, Osaka 565-0871, Japan. koetaka@ar.em-net.ne.jp
authors.forename: Hanayo
authors.initials: H
authors.lastname: Koetaka
authors.forename: Yuko
authors.initials: Y
authors.lastname: Ohno
authors.forename: Kanehisa
authors.initials: K
authors.lastname: Morimoto
mesh_terms: D000328:Adult; D005500:Follow-Up Studies; D015438:Health Behavior; D006801:Humans; D007564:Japan; D008019:Life Style; D008297:Male; D008875:Middle Aged; D011795:Surveys and Questionnaires; D013997:Time Factors; D055815:Young Adult