Trends and risk factors of overweight and obesity among Chinese middle school students
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摘要:
目的 分析中国初中学生肥胖患病情况,探讨影响其流行的因素。 方法 利用中国教育追踪调查2014、2015、2016年三轮数据(分别为8 616、8 762、7 614人,11~18岁),计算中国初中学生超重/肥胖患病率并描述其流行趋势,使用线性回归和Logistic回归分析模型探索初中生体重指数(body mass index,BMI)和肥胖的危险因素。 结果 2016年中国初中生超重/肥胖患病率为15.3%(男:17.9%,女:12.6%)。2014-2016年,初中生超重患病率/肥胖患病率表现持续增长趋势。其中男生超重/肥胖患病率表现为先增长后稳定的流行趋势;女生的超重/肥胖患病率表现为持续增长趋势。2016年横断面研究显示,独生子女(β(SE)=0.23(0.10))、自我评价超重/肥胖(β(SE)=2.83(0.14))及户口为非农(β(SE)=0.23(0.11))是初中生BMI增长的独立危险因素;自我评价超重/肥胖(OR=4.20,95%CI:2.97~5.40)与初中生超重肥胖高度相关。 结论 2014-2016年中国初中生超重/肥胖患病率持续增加。尤其应当重视对独生子女、城市学生肥胖的预防控制。 Abstract:Objective To investigate the trends and risk factors of overweight and obesity in Chinese middle school students. Methods Data from the China Education Panel Survey conducted in 2014, 2015 and 2016 were used (8 616, 8 762, 7 614; age range 11-18 years old). Overweight and obesity were defined according to Chinese sex-age-specific body mass index (BMI) cutoffs. Relationships between risk factors and BMI, overweight and obesity were tested, using linear regression and logistic regression models. Results The overall prevalence of overweight and obesity in 2016 was 15.3% (17.9% in boys, 12.6% in girls). From 2014 to 2016, the prevalence of overweight and obesity was increasing steadily. After adjusting for age and sex in 2016, being only-child, self-perceived being overweight or obese, or living in urban area were associated with higher BMI (β(SE)=0.23(0.10), β(SE)=2.83(0.14), β(SE)=0.23(0.11), respectively). Self-perceived being overweight or obese was associated with overweight and obesity (OR=4.20, 95% CI: 2.97-5.40). Conclusions Overweight and obesity rates among Chinese middle school students increased steadily from 2014 to 2016. Efforts should be made on childhood obesity prevention and control, especially target at those being only-child, living in urban areas. -
Key words:
- Adolescent /
- Overweight /
- Obesity /
- Risk factors
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表 1 2014-2016年中国初中生BMI及超重/肥胖患病趋势变化
Table 1. Trends of BMI and overweight/obesity from 2014 to 2016
年份
(年)BMI(kg/m2)a 超重率(%) 肥胖率(%) 超重/肥胖率(%) 2014 2015 2016 2014 2015 2016 2014 2015 2016 2014 2015 2016 总体(每轮) 18.2±3.0 19.2±3.6 20.1±4.3 8.9 9.2 9.7 3.5 5.1 5.6 12.4 14.3 15.3 性别 男 18.5±3.2 19.4±3.9 20.1±4.0 12.5 12.0 11.5 4.5 6.4 6.4 17.0 18.4 17.9 女 17.9±2.7 19.0±3.3 20.1±4.6 4.9 6.1 7.9 2.5 3.8 4.7 7.4 9.9 12.6 户口类型 农业户口 18.1±2.9 18.9±3.5 19.9±4.1 7.7 7.3 8.0 2.8 4.0 5.1 10.5 11.3 13.1 非农业户口 18.4±3.1 19.5±3.7 20.4±4.6 10.3 11.2 12.1 3.8 5.5 6.1 14.0 16.6 18.2 是否独生 否 17.9±2.9 18.9±3.6 19.9±4.1 6.9 6.9 7.1 2.3 4.0 5.2 9.2 10.9 12.3 是 18.5±3.2 19.5±3.6 20.4±4.5 11.4 12.0 12.7 4.2 5.6 6.1 15.6 17.6 18.8 身材(自我评价) 偏瘦 - 17.2±3.4 17.9±3.2 - 1.3 1.0 3.1 3.3 - 4.4 4.3 中等 - 18.5±2.8 19.4±3.7 - 3.1 2.6 1.8 2.7 - 4.9 5.3 偏胖 - 21.2±3.5 22.0±4.5 - 20.6 21.5 8.7 9.6 - 29.2 31.1 母亲受教育程度 小学及以下 17.9±2.9 19.1±3.6 20.0±5.5 6.4 6.7 7.4 2.5 4.3 4.7 8.9 11.0 12.1 初中 18.1±3.0 19.2±3.7 20.1±4.4 8.0 8.3 9.1 3.0 4.8 5.8 11.0 13.2 14.9 高中/中专 18.4±3.0 19.3±3.5 20.2±3.6 11.8 10.6 10.2 3.3 4.9 6.2 15.1 15.5 16.4 大专/本科及以上 18.6±3.0 19.4±3.4 20.2±3.5 10.8 12.7 13.5 4.1 4.8 5.3 14.9 17.5 18.8 父亲受教育程度 小学及以下 18.0±2.9 19.0±3.8 19.9±3.8 6.2 6.4 7.7 2.4 4.8 4.9 8.6 11.2 12.6 初中 18.1±3.0 19.1±3.7 20.1±4.6 8.2 7.8 8.3 2.7 5.1 5.4 10.9 12.9 13.7 高中/中专 18.3±3.0 19.2±3.4 20.2±4.7 10.1 10.4 10.8 3.4 4.2 6.4 13.5 14.6 17.2 大专/本科及以上 18.6±3.1 19.4±3.5 20.2±3.4 11.1 12.8 13.2 4.3 4.6 5.1 15.4 17.4 18.3 吃快餐膨化食品频率 少或很少 - 19.1±3.6 20.1±4.2 - 9.1 9.3 - 4.6 5.6 - 13.7 14.9 有时 - 19.3±3.6 20.2±4.2 - 9.7 10.2 - 5.0 5.6 - 14.7 15.8 经常或总是 - 19.1±3.7 20.1±4.8 - 7.7 9.2 - 4.6 5.3 - 12.3 14.5 家庭经济条件 中下 17.9±3.0 19.1±3.8 19.9±4.9 6.8 6.1 6.4 2.9 4.7 5.7 9.7 10.8 12.1 中等 18.3±2.9 19.2±3.6 20.1±4.2 9.2 9.8 10.6 3.1 4.7 5.5 12.4 14.5 16.1 中上 18.7±3.2 19.6±3.7 20.1±3.5 12.1 12.3 9.6 4.6 6.4 5.9 16.6 18.8 15.5 零用钱(元/周) 0 18.3±2.9 19.2±3.6 20.1±5.8 9.8 9.8 9.7 3.2 5.0 5.0 13.0 14.9 14.7 1~ 17.8±3.0 18.8±3.5 10.0±3.6 6.7 7.9 10.3 3.8 4.0 5.2 10.5 12.0 15.5 10~ 18.2±3.0 19.2±3.6 20.2±4.6 8.8 8.6 9.3 3.1 4.6 6.4 11.9 13.2 15.7 ≥30 18.3±2.9 19.3±3.6 20.0±3.5 9.3 9.9 9.9 2.9 4.9 5.2 12.2 14.8 15.1 注: ax±s; - : 未有数据; 超重, 肥胖定义: 2018年国家卫生标准《学龄儿童青少年超重与肥胖筛查》(WS/T568-2018) [9]。 表 2 影响因素在超重/肥胖组与非超重/肥胖组间比较情况(N=7 614)
Table 2. Comparison on risk factors by weight status (N=7 614)
指标 非超重或肥胖
(n=6 453, %)超重或肥胖
(n=1 161, %)χ2值 P值 个人特征 性别39.961 39.961 <0.001 女 51.3 41.4 男 48.7 58.6 是否独生 60.909 <0.001 否 56.2 43.7 是 43.8 56.3 身材(自我评价) 957.881 <0.001 偏瘦 24.8 6.12 中等 42.9 13.4 偏胖 32.3 80.5 家庭环境因素 母亲受教育程度 26.142 <0.001 小学及以下 20.7 15.6 初中 41.8 40.4 高中/中专 21.0 22.8 大专/本科及以上 16.5 21.1 父亲受教育程度 26.570 <0.001 小学及以下 13.7 11.0 初中 44.0 38.6 高中/中专 23.9 27.6 大专/本科及以上 18.4 22.8 户口类型 35.467 <0.001 农业户口 58.8 49.2 非农业户口 41.2 50.7 家庭经济条件 13.373 0.001 中下 19.5 14.9 中等 74.0 78.5 中上 6.5 6.6 零用钱(元/周) 0.848 0.666 0 15.0 14.3 1~10 3.8 3.9 10~30 32.9 34.1 ≥30 48.3 47.7 生活行为因素 吃快餐膨化食品频率 1.449 0.330 少或很少 42.2 41.2 有时 45.0 46.8 经常或总是 12.8 12.0 表 4 BMI和超重/肥胖影响因素的多因素回归分析
Table 4. Multivariate regression analysis on risk factors of BMI and overweight/obesity
BMI 超重/肥胖 β(SE) P值 OR(95% CI) P值 是否独生(否=0) 是 0.23(0.10) 0.019 1.06(0.84~1.35) 0.615 身材(自我评价)(中等=0) 偏瘦 -1.67(0.10) <0.001 0.93(0.66~1.33) 0.711 偏胖 2.83(0.14) <0.001 4.20(2.97~5.40) <0.001 户口类型(农业户口=0) 非农业户口 0.23(0.11) 0.037 1.21(0.91~1.60) 0.186 注:调整了年龄、性别和表 3中有意义的结果; -:未纳入分析。 表 3 BMI和超重/肥胖影响因素的单因素回归分析
Table 3. Univariate regression analysis on risk factors of BMI and overweight/obesity
BMI 超重/肥胖 β(SE) P值 OR(95% CI) P值 是否独生(否=0) 是 0.46(0.12) <0.001 1.55(1.32~1.81) <0.001 身材(自我评价)(中等=0) 偏瘦 -1.61(0.10) <0.001 0.69(0.51~0.94) 0.018 偏胖 2.82(0.14) <0.001 10.62(8.35~13.51) <0.001 户口类型(农业户口=0) 非农业户口 0.42(0.13) 0.001 1.45(1.22~1.71) <0.001 家庭经济条件(中等=0) 中下 -0.17(0.14) 0.250 0.73(0.60~0.90) 0.002 中上 -0.01(0.99) 0.993 0.95(0.75~1.19) 0.640 母亲受教育程度(小学及以下=0) 初中 0.11(0.19) 0.543 1.23(0.98~1.54) 0.070 高中/中专 0.16(0.22) 0.465 1.36(1.05~1.77) 0.022 大专/本科及以上 0.24(0.22) 0.290 1.60(1.21~2.11) 0.001 父亲受教育程度(小学及以下=0) 初中 0.20(0.14) 0.174 1.05(0.85~1.29) 0.653 高中/中专 0.34(0.16) 0.039 1.34(1.07~1.69) 0.012 大专/本科及以上 0.33(0.18) 0.081 1.45(1.12~1.89) 0.005 注:回归分析中调整了年龄、性别2种因素。 -
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