Objective : The purpose of this study was to examine changes in smoking, drinking, and dietary habits using a questionnaire that was repeated in the same subjects, as well as to determine how the behavioral changes were affected by age and reproductive events. Subjects and Methods : The Gunma Nurses' Health Study (GNHS) is an ongoing prospective study of a cohort of 699 female nurses. They were followed using a self-reported biennial questionnaire dealing with lifestyle and healthcare practices on women's health, reproductive history, and medical history. The 450 women who responded to all three questionnaires (baseline, second, and third surveys) were included in the analysis. We evaluate the reproducibility of smoking habits and food habits, and examine the impact of these variables on the degree of reproducibility. Results : The prevalence of current smokers decreased slightly over the 4 years from 14.7% to 11.3%. For smoking habit, the total agreement was 95.0%, and the kappa coefficient was 0.788. Spearman's rank correlation coefficient for food items ranged from 0.545 for milk and dairy products to 0.821 for alcoholic beverages. Age and pregnancy affected the reproducibility of smoking and dietary habits, but menopausal status had no effect on these health habits. Epidemiological studies should consider long-term changes in health habits to assess habitual exposures.
The aim of this study was to clarify 1) the proportion of active information acquirers or communicators of health information in the community, and 2) the characteristics of active information acquirers. Our target population consisted of community residents aged 20 to 75 years, living in the city of Koka. We distributed 4,735 questionnaires by mail, and conducted stratified random samplings by age group in the five former town areas. The 2,207 valid questionnaires were used for analysis (the valid response rate was 46.6%). Respondents were classified into the aforementioned 4 groups, and the data was comparatively analyzed among the active acquirer/communicator group (AACG, 32.9%), the active acquirer group (AAG, 11.1%), the active communicator group (ACG, 5.4%) and the inactive acquirer/communicator group (IACG, 50.5%). For the purpose of clarifying the characteristics of people who actively acquire and communicate information, a multinominal logistic regression analysis between 4 groups was performed using the IACG as the reference group. The AACG was predominantly female, aged 60 or over, had physical checkups once a year or more, was higher degree of neighborly ties, participated in social activities, and had a greater sense of cooperation with the municipality. we believe that properly approaching the AAG and the ACG, will promote the dissemination of information, and could lead to the implementation of more effective and efficient health promotion programs.