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      Subnational disparity of anemia among Chinese Han students aged 7–14 years in 2014


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          Objective To describe the subnational disparity of anemia among Chinese Han students aged 7–14 years, and to provide a reference for making intervention measures to improve anemia among Chinese children.

          Methods A total of 71 115 Chinese Han students aged 7–14 years were selected from the project ' 2014 Chinese National Survey on Students’ Constitution and Health'. Anemia and its severity were defined according to the diagnosis criteria of World Health Organization (WHO). The rank sum test was used to compare anemia distribution of different subgroups. Logistic regression models were established to analyze the influencing factors of anemia and moderate -to-severe anemia.

          Results In the 71 115 students with measured hemoglobin concentrations in the 2014 CNSSCH, the overall prevalence rate of anemia was 8.9%, with 5.8% to be mild anemia and 3.1% to be moderate-to-severe anemia. For boys aged 7–14 years, the hemoglobin concentration increased with age; Boys aged 7 years had the highest anemia prevalence (9.8%) and moderate -to - severe anemia prevalence (4.4%). For girls aged 7–12 years, the hemoglobin concentration increased with age, but the concentration decreased a little when girls reached 14 years of age; 14-year-old girls had the highest prevalence of anemia (13.3%), and 7-year-old girls had the highest prevalence of moderate-to-severe anemia (4.8%). The highest prevalence rates of anemia were found in Hainan (24.1%) and Gansu (19.6%), while the lowest was in Beijing (2.0%). Logistic regression models revealed that, for children aged 7 and 9 years, when comparing to those lived in urban areas, living in rural areas appeared to be a risk factor for anemia ( OR = 1.34) and moderate-to-severe anemia ( OR = 1.48); when comparing to living in cities of upper socio-economic status, living in cities of intermediate socio-economic status appeared to be a risk factor for anemia ( OR = 1.43) and moderate-to-severe anemia ( OR = 1.41), and living in cities of lower socio-economic status also appeared to be a risk factor for anemia ( OR = 1.26) and moderate-to-severe anemia ( OR = 1.35). For students aged 12 and 14 years, girls were at higher risks for anemia and moderate-to-severe anemic ( OR = 2.41, 2.20).

          Conclusion The overall prevalence of anemia was low in Chinese school-aged children, but substantial subnational disparity and subgroup disparity exists. Our data called for setting up context-specific measures, such as deworming and iron supplementation, to deal with child anemia. Intervention programs need to be implemented among adolescent girls and those with relatively low socioeconomic status.


          【摘要】 目的 分析中国 7 ~ 14 岁汉族中小学生贫血流行现状和地区差异, 为改善中国儿童贫血状况提供依据。方 法选取 2014 年全国学生体质与健康调研中 7~14 岁汉族中小学生 71 115 名。使用 WHO 贫血诊断标准, 根据血红蛋白 水平定义贫血及其严重程度。用秩和检验比较不同群体贫血程度分布的差异, 通过 Logistic 回归分析贫血和中重度贫血的 影响因素。 结果 7~14 岁中小学生总体贫血率为 8.9%, 其中轻度和中重度贫血率分别为 5.8% 和 3.1%。男生 7~14 岁平 均血红蛋白水平随年龄的增加而上升, 7 岁男生贫血率 (9.8%) 和中重度贫血率 (4.4%) 最髙。女生 7~12 岁平均血红蛋白 水平逐渐上升, 14 岁有轻微下降, 14 岁贫血率 (13.3%) 最髙, 7 岁中重度贫血率 (4.8%) 最髙。 30 个省份中, 学生总体贫血 率最髙的 2 个省为海南 (24.1%) 和甘肃 (19.6%), 最低的为北京 (2.0%)。 Logistic 回归分析显示, 对于 7 岁和 9 岁学生, 相 比于居住在城市, 居住在农村是贫血 ( OR =1.34) 和中重度贫血 ( OR =1.48) 的危险因素; 相比于居住在好片, 中片、差片均 是贫血 ( OR值分别为1.43, 1.26) 和中重度贫血 ( OR值分别为1.41, 1.35) 的危险因素; 对于 12 和 14 岁学生, 女生患贫血和 中重度贫血 ( OR值分别为 2.41, 2.20) 的风险髙于男生。 结论 中国 7~14 岁中小学生贫血率总体较低, 但地区和人群变 异大。在贫血率髙的地区应基于实际情况通过除虫或补充铁剂等方式降低贫血率, 干预应关注青春期女孩和社会经济地 位较低的人群。

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          Author and article information

          Chinese Journal of School Health
          Chinese Journal of School Health (China )
          01 June 2020
          01 January 2020
          : 40
          : 6
          : 878-881
          [1] 1School of Public Health and Institute of Child and Adolescent Health, Peking University, Beijing (100191), China
          Author notes
          *Corresponding author: Song Yi, E-mail: songyi@ 123456bjmu.edu.cn
          © 2019 Chinese Journal of School Health

          This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 Unported License (CC BY-NC 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. See https://creativecommons.org/licenses/by-nc/4.0/.

          Self URI (journal-page): http://www.cjsh.org.cn
          Journal Article

          Ophthalmology & Optometry,Pediatrics,Nutrition & Dietetics,Clinical Psychology & Psychiatry,Public health
          Prevalence,Regression analysis,Hemoglobins,Anemia,Students


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