Relationship between dietary inflammatory index and overweight/obesity in people aged 35 - 74 years in Yili Prefecture, Xinjiang
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摘要:
目的 分析膳食炎症指数(dietary inflammatory index,DⅡ)与超重/肥胖之间的关联,为研究肥胖的炎症机制提供科学依据。 方法 2019年1月―5月在新疆伊犁州霍城县招募35~74岁队列成员并完成基线调查,采用统一制定的调查问卷,收集研究对象一般人口特征、行为方式等信息。采用食物频率调查表(food frequency questionnaires,FFQ),调查研究对象膳食摄入情况,计算DⅡ,评估膳食的炎症潜能。 结果 研究对象2 241人,超重的检出率为38.51%,肥胖的检出率为32.04%;总研究对象DⅡ评分以正值为主,总体膳食属于促炎性膳食;调整年龄、民族、性别、文化程度、家庭收入后,Log-binomial回归分析模型结果显示DⅡ与超重及肥胖存在相关性,最大促炎组患超重及肥胖的风险是最大抗炎组的1.32倍(PR=1.32,95% CI:1.10~1.57,P=0.015),其中DⅡ与超重仅在Q1(最大抗炎)与Q4(最大促炎)组间发现相关性(PR=1.26,95% CI:1.09~1.47,P=0.002),DⅡ与肥胖在每组均存在相关性,随着DⅡ评分的增加,研究对象患肥胖的风险增加。 结论 膳食炎症指数与超重/肥胖之间存在相关性,膳食的肥胖效应可以从炎症的角度进行深入分析。 Abstract:Objective To analyze the association between dietary inflammation index (DⅡ) and overweight/obesity, and to provide scientific basis for studying the inflammatory mechanism of obesity. Methods From January to May 2019, the subjects were all adults aged 35-74 years old in the baseline participating in the Xinjiang multi-ethnic natural population cohort construction and health follow-up study. The general demographic characteristics and behavior patterns of the subjects were collected by using an unified questionnaire. The DⅡ score was calculated from a diet intake assessed by 127 food frequency questionnaires (FFQ). Results Among the 2 241 participants, the detection rate of overweight and obesity was 38.51% and 32.04%. Log-binomial regression analyses were used to estimate the prevalence ratios (PRs) and 95% confidence intervals (95% CIs) of DⅡ in relation to overweight/obesity. After adjusting for potential confounders, compared with the 1st quintile group, subjects from the 4th quintile group had a higher risk of overweight/obesity (PR = 1.32, 95% CI: 1.10-1.57, P=0.015). The association between DⅡ and overweight was only found between the 1st quintile group and the 4th quintile group (PR=1.26, 95% CI:1.09-1.47, P=0.002), but compared with the 1st quintile group, subjects from other groups all had higher risk of obesity. Conclusions There was a correlation between the dietary inflammatory index and overweight/obesity, the obesity effect of diet could be analyzed from the perspective of inflammation. -
Key words:
- Xinjiang /
- Adult /
- Dietary inflammatory index /
- Obesity
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表 1 不同研究对象超重、肥胖检出率的差异[n(%)]
Table 1. The different detection rate of overweight and obesity among different subjects [n(%)]
变量 超重组 肥胖组 总计 χ2值 P值 年龄(岁) 11.50 0.022 35~ 270(37.30) 209(28.90) 723(32.30) 46~ 304(39.40) 265(34.40) 771(34.40) 56~74 288(38.60) 244(32.70) 747(33.30) 性别 21.18 < 0.001 男性 450(41.00) 301(27.40) 1 098(49.00) 女性 413(36.1) 417(36.5) 1 143(51.00) 民族 59.67 < 0.001 汉族 202(47.0) 108(25.10) 430(19.20) 哈萨克族 369(39.3) 325(34.60) 940(41.90) 回族 67(37.60) 74(41.60) 178(7.90) 维吾尔族 205(31.40) 198(30.30) 653(29.10) 其他 20(50.0) 13(32.50) 40(1.80) 文化程度 6.74 0.150 小学及以下 650(38.80) 551(32.90) 1 675(74.70) 初中、高中及以上 213(37.60) 167(29.50) 566(25.30) 家庭年收入(万元) 12.02 0.017 <1.0 101(44.50) 62(27.30) 227(10.10) 1.0~ 616(38.30) 502(31.20) 1 610(71.80) >3.5 146(36.10) 154(38.10) 404(18.00) 表 2 不同特征研究对象DⅡ的分布比较[n(%)]
Table 2. Comparison of the distribution of DⅡ with different characteristics [n(%)]
变量 Q1 Q2 Q3 Q4 χ2值 P值 年龄(岁) 7.34 0.025 35~ 194(26.80) 181(25.00) 180(24.90) 168(23.20) 46~ 200(25.90) 197(25.60) 188(24.40) 186(24.10) 56~74 166(22.30) 182(24.40) 189(25.30) 209(28.00) 民族 29.98 < 0.001 汉族 133(30.90) 117(27.20) 97(22.60) 83(19.30) 哈萨克族 231(24.60) 236(25.10) 254(27.00) 219(23.30) 回族 57(32.00) 47(26.40) 42(23.60) 32(18.00) 维吾尔族 131(20.10) 147(22.50) 156(23.90) 219(33.50) 其他 8(20.00) 13(32.50) 9(22.50) 10(25.00) 文化程度 31.92 < 0.001 小学及以下 385(23.00) 396(23.60) 433(25.90) 461(27.50) 初、高中及以上 175(31.10) 164(28.40) 125(22.40) 102(18.10) 家庭年收入(万) 7.51 0.023 <1.0 55(24.20) 56(24.70) 60(26.40) 56(24.70) 1.0~ 371(23.00) 418(26.00) 411(25.50) 410(25.50) >3.5 134(33.20) 86(21.30) 87(21.50) 97(24.00) BMI(kg/m2) 11.03 0.004 18.5~ 195(29.50) 160(24.20) 158(23.90) 147(22.30) 24.0~ 211(24.40) 217(25.10) 216(25.00) 219(25.40) ≥28.0 151(21.00) 187(26.00) 186(25.90) 194(27.00) 体力活动 7.24 0.027 从不锻炼 9(64.30) 2(14.30) 1(7.10) 2(14.30) 偶尔锻炼 526(24.40) 547(25.40) 537(25.00) 542(25.20) 经常锻炼 25(33.30) 11(14.70) 20(26.70) 19(25.30) 表 3 DⅡ与超重/肥胖的关联性分析
Table 3. Association between DⅡ and overweight/obesity
DⅡ分类 超重/肥胖 PR(95% CI)值 P值 超重 PR(95% CI)值 P值 肥胖 PR(95% CI)值 P值 Q1 362 1.00 211 1.00 151 1.00 Q2 404 1.07(0.88~1.29) 0.619 217 1.07(0.90~1.25) 0.430 187 1.62(1.16~2.25) 0.005 Q3 402 1.10(0.91~1.33) 0.462 216 1.07(0.90~1.25) 0.440 186 1.66(1.19~2.33) 0.003 Q4 413 1.32(1.10~1.57) 0.015 219 1.26(1.09~1.47) 0.002 194 1.91(1.36~2.70) <0.001 -
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