我国部分地区35～64岁人群血浆叶酸水平与年龄性别差异比较

目的 :　了解我国部分地区 3 5～ 6 4岁人群血浆叶酸性别、年龄分布特征。方法 :　以来自南北方有代表性的城乡地区、3 5～ 6 4岁男女两性 2 5 4 5人为研究样本 ,测定血浆叶酸 ,并进行不同性别、年龄血浆叶酸水平差异比较。结果 :　 (1 )男性血浆叶酸水平显著低于女性 (9.70nmol/L vs1 4.2 nmol/L,P=0 .0 0 1 ) ,血浆叶酸缺乏率显著高于女性 (3 1 .0 % vs1 2 .5 % ,P=0 .0 0 1 )。(2 )男性血浆叶酸南方高于北方 ,城乡之间差异除北方冬春季节城市显著低于农村外 ,均不具有统计学意义 ,城乡叶酸缺乏率亦不存在显著差异 ;女性血浆叶酸亦呈南方高于北方 ,并有城市高于农村 ,北方农村叶酸缺乏率显著高于城市的分布特征。 (3 )南方男性血浆叶酸随年龄升高而增加 ,南方女性及北方男女性血浆叶酸有随年龄升高而增加的趋势 ,差异不具统计学意义。结论 :　我国 3 5～ 6 4岁人群男性血浆叶酸显著低于女性 ,缺乏率高于女性 ;男女两性血浆叶酸在城乡之间的分布特征不同 ,女性血浆叶酸城乡差异显著

COMPARISON STUDY OF PLASMA FOLATE IN CHINESE ADULTS IN GENDERS AND AGES

Objective: To describe the differences of plasma folate concentration and prevalence of folate deficiency in genders and ages in Chinese adults aged 35 to 64 years. Methods: By cross-sectional analysis, plasma folate concentration was measured in 2 545 adults including men and women by microbiological assay. Results: (1) Men tended to have lower plasma folate concentration and higher prevalence of folate deficiency(9.70 nmol/L, 31.0%) than did women(14.2 nmol/L, 12.5%, P=0.001). (2) Men in South have significantly higher plasma folate concentration and lower prevalence of folate deficiency than in North. The difference of plasma folate concentration was not evident between urban and rural area, but evident in North between in winter and spring. There were no significant differences of prevalence of folate deficiency for men between urban and rural areas in both regions. For women, the differences of plasma folate concentration in areas were significant, which were higher in South and urban, and lower in North and rural areas. (3) Plasma folate concentration increased with age in Southern men. A similar trend for others was not significant. Conclusion: Men have lower plasma folate concentration and higher prevalence of plasma folate deficiency than do women. The distribution of plasma folate concentrations in urban and rural areas seems different between men and women.