Current situation and influencing factors of abnormal glucose metabolism in junior middle school students in Yanqing District, Beiing / 中华疾病控制杂志

Objective To understand the current situation and influencing factors of abnormal glucose metabolism in junior middle school students in Yanqing District, Beijing. Methods With the mothod of stratified cluster random sampling, the questionnaire, physical examination and fasting capillary blood glucose were conducted in 2 493 students from 4 junior high schools. Results The prevalence of diabetes, impaired fasting glucose, and abnormal glucose metabolism were 2.5%, 11.4%, and 13.9%, respectively. The prevalence of abnormal glucose metabolism varied significantly among different ages, grades, regions, obesity, central obesity and hypertension (all P<0.05); Unconditional multiple Logistic regression analysis showed that urban, centripetal obesity, and hypertension were positively associated with the risk of abnormal glucose metabolism in middle school students in Yanqing District; daily breakfast was negatively associated with the risk of abnormal glucose metabolism. Conclusion The prevalence of abnormal glucose metabolism is high among junior middle school students, urban, central obesity, high blood pressure and daily breakfast are influencing factors of abnormal glucose metabolism in Yanqing District of Beijing.

BMI and BMI Changes to All-cause Mortality among the Elderly in Beijing: a 20-year Cohort Study / 生物医学与环境科学（英文）

<p><b>OBJECTIVE</b>To explore the association between body mass index (BMI) and all-cause mortality among the elderly in Beijing.</p><p><b>METHODS</b>This analysis was based on the Beijing multidimensional longitudinal study of aging (BLSA), which included 2,090 subjects over 55 years old and was followed-up from 1992 to 2012. BMI-mortality curves were drawn to find the optimal BMI range with the lowest mortality. Cox proportional hazard models were used to obtain the hazard ratios (HRs) for BMI and BMI changes in the overall population and in specific stratified populations.</p><p><b>RESULTS</b>During follow-up, 1,164 deaths were recorded; BMI-mortality curve was U-shaped, with the lowest mortality at a BMI of approximately 25 kg/m2. After adjusting for gender, age, smoking, drinking and some pre-existing diseases, HRs for underweight, overweight and obesity compared with normal weight were 1.372 (95% CI: 1.154-1.631), 0.767 (95% CI: 0.666-0.884) and 0.871 (95% CI: 0.830-1.246), respectively. HR for BMI drop was 3.245 (95% CI: 0.824-12.772) in the underweight group and 1.892 (95% CI: 0.830-1.246) in the normal weight group, HR for BMI rise was 1.795 (95% CI: 1.243-2.591) in normal weight group and 1.962 (95% CI: 1.202-3.203) in the overweight group.</p><p><b>CONCLUSION</b>Keeping BMI in an overweight status and stable is related to a reduced mortality.</p>

Studies on prevalence and control of several common chronic diseases among Beijing adults in 2005 / 中华流行病学杂志

<p><b>OBJECTIVE</b>To understand the prevalence and control of several common chronic disease in Beijing adults.</p><p><b>METHODS</b>16,658 adult residents were randomly selected with stratified multi-stage cluster sampling method. Each participant was invited to receive a set of standardized questionnaire, physical examinations and laboratory tests.</p><p><b>RESULTS</b>Data showed that the prevalence, awareness, treatment and the rate of control on hypertension among the adults in Beijing were 29.1%, 49.3%, 42.3% and 10.6% respectively. The counterparts of diabetes mellitus were 8.8%, 56.7%, 50.0% and 15.0%. The four corresponding figures for dyslipidemia were 33.2%, 31.1%, 13.0% and 4.3%, respectively. 22.9% of the Beijing adults had metabolic syndrome including 8.1 per thousand suffering from myocardial infarction and 18.4 per thousand from stroke. Except for diabetes, all the chronic diseases had higher prevalence rate in rural area than in urban area, according to the findings under our study. Postmenopausal women were more susceptible to chronic disease than men.</p><p><b>CONCLUSION</b>The prevalence rate of chronic disease in Beijing was still high. The prevalence rate in rural area had exceeded the level in urban area. Adjustment and attention should be made according to the prevalence features and weakness existed in present chronic disease control strategy.</p>

Typing of hemorrhagic fever with renal syndrome by cluster analysis / 中华流行病学杂志

<p><b>OBJECTIVE</b>To make an inquiry into method of typing of hemorrhagic fever with renal syndrome (HFRS).</p><p><b>METHOD</b>Average monthly rates were calculated on the basis of data from 1995 to 1999, then cluster analysis was carried out to type out endemic areas.</p><p><b>RESULTS</b>Compared with the results of 36 surveillance spots from 1980 to 1992, twenty-four surveillance spots had the same results (66.7%). Twenty-three surveillance spots had the same results with the original data in 1999 (82.1%).</p><p><b>CONCLUSION</b>HFRS incidences increased in spring or in summer, but decreased in autumn or in winter. Cluster analysis seemed to be a supplementary method in distinguishing the epidemic types for HFRS.</p>