Vitamin D Nutritional Status and Its Related Factors for Chinese Children and Adolescents in 2010-2012
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 15,000
- 试验地点
- 1
- 主要终点
- 25 hydroxyvitamin D
研究概览
简要总结
The aim of this study was to assess the vitamin D status and analyze risk factors for vitamin D inadequacy of Chinese children and adolescents aged 6-17y.
详细描述
In this study, we analyzed the vitamin D status of Chinese children and adolescents aged 6-17y, and related risk factors (such as gender, region strata, ambient UVB level at area of residence, season, and outdoor time, etc.). Serum 25 hydroxyvitamin D [25(OH)D] was measured with a radioimmunoassay kit in 15 000 children and adolescent participants in Chinese national nutrition and health survey (CNNHS) 2010-2012. Age, gender, region type, ethnicity, outdoor time, vitamin D supplementation were recorded in unified design questionnaires. Season was recorded by the date of blood taken; location was divided into north and south by China's Qinling mountains and Huaihe river; and ambient ultraviolet B (UVB) radiation level was classified according to the corresponding dose of each participant living area from National Aeronautics and Space Administration data.
研究设计
- 研究类型
- Observational
- 观察模型
- Other
- 时间视角
- Cross Sectional
入排标准
- 年龄范围
- 6 Years 至 17 Years（Child）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Participanted in China national nutrition and health survey (CNNHS) 2010-2012; Aged 6-17 years; Had blood taken;
排除标准
- 未提供
结局指标
主要结局
25 hydroxyvitamin D
时间窗: through study completion, an average of 1 year
To describe the vitamin D status,ng/mL.
次要结局
- Environmental data(up to 25 weeks)
- Outdoor time(through study completion, an average of 1 year)
- Demographic data(through study completion, an average of 1 year)
- Vitamin D supplementation(through study completion, an average of 1 year)
研究者
Lichen Yang
National Institute for Nutrition and Health
Centers for Disease Control and Prevention, China