Liu Jinling, Qu Qun, Xuekelati Saiyare, Bai Xue, Wang Li, Xiang Hong, Wang Hongmei
Second Department of the Cadre Health Care Center, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, China.
The Health Center for the Cadre of Xinjiang Uygur Autonomous Region, Urumqi, China.
Front Med (Lausanne). 2021 Jul 15;8:675931. doi: 10.3389/fmed.2021.675931. eCollection 2021.
Studies have shown an association between undernutrition and increased adverse outcome, as well as substantial geographic and age variations in undernutrition. Body mass index (BMI), a core indicator of undernutrition, is easy to measure and reflects the nutritional and health status of the human body. It is a simple and suitable tool for epidemiological investigations in large sample populations. Herein, we provide the first description of geographic and age variations in the prevalence of low BMI among community-dwelling older people in Xinjiang. From January 2019 to December 2019, using a multi-stage random sampling method, we conducted a cross-sectional epidemiological survey of the community-dwelling older people in Xinjiang at different latitudes. Of the 87,000 participants, the statistical analyses included 86,514 participants with complete data. In Xinjiang, the prevalence of low BMI was 7.7% in the community-dwelling older people. The BMI gradually decreased with increasing age and gradually increased with latitude. The prevalence of low BMI in northern Xinjiang was 5.3%, which was significantly lower than that in eastern (7.7%) and southern (9.3%) Xinjiang. In the 60-69-, 70-79-, 80-89-, and ≥90-year age groups, the prevalence rates of low BMI were 5.8, 7.9, 10.0, and 13.9%, respectively. After adjusting for confounding factors (sex, ethnic group, hypertension, diabetes, hyperlipemia, smoking, and drinking), multivariate logistic regression analysis showed that the odds ratios (95% CI) for low BMI in eastern and southern Xinjiang were 1.165 (1.056-1.285) and 1.400 (1.274-1.538), respectively, compared to northern Xinjiang. The adjusted odds ratios (95% CI) for low BMI in the 70-79-, 80-89-, and ≥90-year age groups were 1.511 (1.39-1.635), 2.233 (2.030-2.456), and 3.003 (2.439-3.696), respectively, compared to the 60-69-year age group. The results of this study revealed geographic and age variations in the prevalence of low BMI in the community-dwelling older people in Xinjiang. The prevalence of low BMI gradually increased as the latitude decreased and as age increased.
研究表明，营养不良与不良后果增加之间存在关联，且营养不良存在显著的地理和年龄差异。体重指数（BMI）作为营养不良的核心指标，易于测量，反映了人体的营养和健康状况。它是大样本群体流行病学调查的一种简单且适用的工具。在此，我们首次描述了新疆社区居住老年人中低BMI患病率的地理和年龄差异。2019年1月至2019年12月，我们采用多阶段随机抽样方法，对新疆不同纬度的社区居住老年人进行了横断面流行病学调查。在87000名参与者中，统计分析纳入了86514名数据完整的参与者。在新疆，社区居住老年人中低BMI的患病率为7.7%。BMI随年龄增长逐渐降低，随纬度升高逐渐升高。新疆北部低BMI的患病率为5.3%，显著低于东部（7.7%）和南部（9.3%）新疆。在60 - 69岁、70 - 79岁、80 - 89岁和≥90岁年龄组中，低BMI的患病率分别为5.8%、7.9%、10.0%和13.9%。在调整混杂因素（性别、民族、高血压、糖尿病、高脂血症、吸烟和饮酒）后，多因素logistic回归分析显示，与新疆北部相比，新疆东部和南部低BMI的比值比（95%CI）分别为1.165（1.056 - 1.285）和1.400（1.274 - 1.538）。与60 - 69岁年龄组相比，70 - 79岁、80 - 89岁和≥90岁年龄组低BMI的调整比值比（95%CI）分别为1.511（1.39 - 1.635）、2.233（2.030 - 2.456）和3.003（2.439 - 3.696）。本研究结果揭示了新疆社区居住老年人中低BMI患病率的地理和年龄差异。低BMI的患病率随着纬度降低和年龄增加而逐渐升高。
