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Japanese Community (japanese + community)
Selected AbstractsThe Prevalence of Dental Caries and Fluorosis in Japanese Communities with Up to 1.4 ppm of Naturally Occurring FluorideJOURNAL OF PUBLIC HEALTH DENTISTRY, Issue 3 2000Akihito Tsutsui DDS Abstract Objective: The purpose of this study was to determine the relationship between the concentration of fluoride in drinking water and the prevalence of dental caries and fluorosis in seven Japanese communities with different concentrations of fluoride occurring naturally in the drinking water. Methods: A total of 1,060 10- to 12-year-old lifetime residents were examined to determine the prevalence of dental caries and fluorosis in communities with trace amounts to 1.4 ppm fluoride in the drinking water in 1987. Systemic fluorides (drops or tablets) have never been available in Japan and the market share of fluoride-containing toothpaste was 12 percent at the time of the study. Results: The prevalence of dental caries was inversely related and the prevalence of fluorosis was directly related to the concentration of fluoride in the drinking water. The mean DMFS in the communities with 0.8 to 1.4 ppm fluoride was 53.9 percent to 62.4 percent lower than that in communities with negligible amounts of fluoride. Multivariate analysis showed that water fluoride level was the strongest factor influencing DMFS scores. The prevalence of fluorosis ranged from 1.7 percent to 15.4 percent, and the increase in fluorosis with increasing fluoride exposure was limited entirely to the milder forms. Conclusions: The findings of this study conducted in 1987 in Japan parallel those reported by Dean et al. in the early 1940s. [source] Trends in prevalence of Alzheimer's disease and vascular dementia in a Japanese community: the Hisayama StudyACTA PSYCHIATRICA SCANDINAVICA, Issue 4 2010A. Sekita Sekita A, Ninomiya T, Tanizaki Y, Doi Y, Hata J, Yonemoto K, Arima H, Sasaki K, Iida M, Iwaki T, Kanba S, Kiyohara Y. Trends in prevalence of Alzheimer's disease and vascular dementia in a Japanese community: the Hisayama Study. Objective:, To examine secular trends in the prevalence of Alzheimer's disease (AD) and vascular dementia (VD) in a general Japanese population. Method:, Four cross-sectional examinations were conducted among residents of a Japanese community aged ,65 in 1985, 1992, 1998 and 2005. Results:, The age- and sex-adjusted prevalence of all-cause dementia significantly increased with time (6.0% in 1985, 4.4% in 1992, 5.3% in 1998 and 8.3% in 2005; P for trend = 0.002). A similar trend was observed for AD (1.1%, 1.3%, 2.3% and 3.8% respectively; P for trend < 0.001), while the age- and sex-adjusted prevalence of VD and other/unclassified dementia showed J-shaped patterns (for VD: 2.3%, 1.5%, 1.5% and 2.5%, respectively, P for trend = 0.82; for other/unclassified dementia: 2.6%, 1.7%, 1.5% and 2.0%, P for trend = 0.26). The prevalence of AD was likely to increase with time from 1985 to 2005 among subjects aged 75 or older. The ratio of the prevalence of VD to that of AD decreased with time (2.1 in 1985, 1.2 in 1992, 0.7 in 1998 and 0.7 in 2005). Conclusion:, Our findings suggest that the prevalence of all-cause dementia and AD significantly increased over the past two decades in the general Japanese population. [source] Impact of history or onset of chronic medical conditions on higher-level functional capacity among older community-dwelling Japanese adultsGERIATRICS & GERONTOLOGY INTERNATIONAL, Issue 2003Yoshinori Fujiwara Background: Many studies have examined the impact of chronic medical conditions on the age-related decline in basic activities of daily living (BADL) and the instrumental activities of daily living (IADL), but less is known concerning the influence of chronic disease on physical, cognitive, social, and economic aspects of higher-level functional capacity. Methods: Subjects comprised 793 and 725 persons aged 65,84 years, living in an urban and a rural Japanese community, respectively. A baseline interview established any history of chronic medical conditions. Four years later, a second interview again assessed chronic disease, and higher-level functional capacity was evaluated using the Tokyo Metropolitan Institute of Gerontology (TMIG) Index of Competence. Results: Multiple logistic regression analysis revealed that declines in total score and/or any of three subscales of the TMIG Index of Competence were significantly associated with a history of chronic disease, the onset of visual impairment and the development of hearing impairment, even after controlling for the subject's age, gender, educational attainment, and baseline TMIG Index of Competence. Episodes of stroke were significantly associated with declines in IADL. Hypertension, diabetes mellitus, and heart disease were also significantly associated with a decrease in functional competence, although each affected a different subscale of the TMIG Index of Competence. Conclusions: The present results underline the importance of controlling chronic medical conditions through a physically active lifestyle and an appropriate medical regimen in order to limit the age-related decline in functional capacity. [source] High incidence of newly-developed gastroesophageal reflux disease in the Japanese community: A 6-year follow-up studyJOURNAL OF GASTROENTEROLOGY AND HEPATOLOGY, Issue 3 2008Masaki Miyamoto Abstract Background and Aim:, We conducted a community-based study to assess the incidence of newly-developed gastroesophageal reflux disease (GERD). We also analyzed the risk factors of GERD occurrence. Methods:, A total of 322 patients without acid suppression therapy (135 men, mean age: 59.8 years), who lived in the Japanese community, took a QUEST questionnaire (a self-administered questionnaire for the screening of GERD) in 1998. Blood samples were taken for the measurement of an anti- Helicobacter pylori antibody and pepsinogen (PG) I/II to assess the grade of gastric atrophy. Of these patients, 289 scored less than six points and were diagnosed as non-GERD. Two-hundred-and-forty-one patients (95 men, mean age: 67.0 years) took the QUEST questionnaire again in 2004 (after 6 years). The incidence of newly-developed GERD was analyzed. These patients were categorized into three groups based on their initial PG I/II (group A: less than three, group B: three to six, and group C: more than six). The risk factors of GERD occurrence were evaluated. Results:, Of the 241 non-GERD patients, 37 patients (15.4%) developed GERD after 6 years. The incidence of newly-developed GERD in group C was significantly higher than both groups A and B (group A: 3.8% [three of 79], group B: 11.8% (11/93), group C: 33.3% (26/69), P < 0.01, respectively). The prevalence of H. pylori negativity, constipation, and medication of Ca antagonists in newly-developed GERD were significantly higher than in those who did not develop GERD. [Correction added after online publication on 1 July 2007: the preceding sentence has replaced one that read ,The prevalence of H. pylori negativity, constipation, and medication of Ca antagonists in newly-developed GERD were significantly higher than in those who did develop GERD.'] Conclusion:, The incidence of newly-developed GERD in the Japanese community was 16.5% for 6 years. The incidence of newly-developed GERD patients who scored a PG I/II over six was significantly higher than those who scored lower. H. pylori negativity, constipation, and medication of Ca antagonists might be risk factors of GERD occurrence. [source] | ||||||||||