绵阳市0～14岁人群维生素D水平调查

目的：了解绵阳市0～14岁人群维生素D（VitD）营养状况。方法调查对象为2564例在绵阳市中心医院门诊就诊的0～14岁人群，用电化学发光法测定其血清25-羟维生素D 25（O H ）D ]，对结果进行统计学分析。结果 2564例0～14岁人群25（OH）D为（30．63±12．78）ng/mL ，最低值为3．00 ng/mL ，最高值为70．00 ng/mL。VitD缺乏574例，占22．4％；VitD不足744例，占29．0％；VitD充足1246例，占48．6％。男性和女性的VitD水平差异无统计学意义（P＞0．05）。2岁以后，随着年龄的增加，VitD水平逐渐降低，VitD缺乏率逐渐升高。1～2岁为VitD水平峰值阶段。结论绵阳市0～14岁人群VitD水平较低，6岁以后VitD缺乏情况更加严重。因此，应该定期进行VitD营养状况的调查，增加孩子户外活动时间，及时补充VitD。

Investigation on vitamin D levels in children aged from 0 to 14 years old in Mianyang city

Objective To investigate the nutritional status of vitamin D （VitD） in children aged from 0 to 14 years old in Mianyang city .Methods Electrochemiluminescence assay was used to measure serum levels of 25-hydroxyvitamin D 25（OH）D] in 2 564 children aged from 0 to 14 years old .The results were statistically analyzed . Results The average level of 25（OH）D was （30 .63 ± 12 .78）ng/mL ,the minimum value was 3 .00 ng/mL ,and the maximum value was 70 .00 ng/mL .Among 2 564 cases ,574（22 .4% ） cases were deficient of 25（OH）D ,744（29 .0% ） cases were relative deficient ,and 1 246（48 .6% ） cases were sufficient .There were no statistical difference between males and females （P〈0 .05） .Level of 25（OH）D was highest in 1-2 years old group .Level of 25（OH）D decreased and percentages of deficiency of VitD increased with age after 2 years old .Conclusion Level of 25（OH） D might be low in children aged from 0 to 14 years old ,and deficiency of VitD might be serious in children aged from 7 to 14 years old .Regular investigation of VitD ,outdoor activities and additional VitD supplementation could be necessary .