The China Health and Nutrition Survey
试验速览
- 阶段
- 不适用
- 入组人数
- 5,547
- 试验地点
- 1
- 主要终点
- Hyperuricemia
研究概览
简要总结
The China Health and Nutrition Survey (CHNS), an ongoing open cohort, international collaborative project between the Carolina Population Center at the University of North Carolina at Chapel Hill and the National Institute for Nutrition and Health (NINH, former National Institute of Nutrition and Food Safety) at the Chinese Center for Disease Control and Prevention (CCDC), was designed to examine the effects of the health, nutrition, and family planning policies and programs implemented by national and local governments and to see how the social and economic transformation of Chinese society is affecting the health and nutritional status of its population. The impact on nutrition and health behaviors and outcomes is gauged by changes in community organizations and programs as well as by changes in sets of household and individual economic, demographic, and social factors.
The survey was conducted by an international team of researchers whose backgrounds include nutrition, public health, economics, sociology, Chinese studies, and demography. The survey took place over a 7-day period using a multistage, random cluster process to draw a sample of about 7,200 households with over 30,000 individuals in 15 provinces and municipal cities that vary substantially in geography, economic development, public resources, and health indicators. In addition, detailed community data were collected in surveys of food markets, health facilities, family planning officials, and other social services and community leaders.
详细描述
Survey Design
The survey covers nine provinces that vary substantially in geography, economic development, public resources, and health indicators. A multistage, random cluster process was used to draw the samples surveyed in each of the provinces. Counties in the nine provinces were stratified by income (low, middle, and high), and a weighted sampling scheme was used to randomly select four counties in each province. In addition, the provincial capital and a lower income city were selected when feasible. In two provinces, other large cities had to be selected. Villages and townships within the counties and urban and suburban neighborhoods within the cities were selected randomly. In 1989 to 1993 there were 190 primary sampling units, and a new province and its sampling units were added in 1997. There are about 4,400 households in the overall survey, covering some 19,000 individuals. Follow-up levels are high, but families that migrate from one community to a new one are not followed. Movement within the primary sampling units and some larger urban entities is attempted.
The first round of the CHNS, including household, community, and health/family planning facility data, was collected in 1989. Six additional panels were collected in 1991, 1993, 1997, 2000, 2004, and 2006. Since the 1993 survey, all new households formed from sample households were added. Since 1997, new households in original communities were also added to replace households no longer participating in the study. Also since 1997, new communities in original provinces have been added to replace sites no longer participating. A new province was also added in 1997 when one province was unable to participate. The dropped province returned to the study in 2000.
The Chinese Ministry of Public Health has committed to continue this project as long as outside support is provided to supplement the extensive support it already provides. The research project is truly a collaborative effort, with funding with funding, expertise, and other skills shared equally by the American and Chinese institutions in significant collaborative effort.
The Household Survey
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Prospective
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •reported no endocrinal and rheumatological disease at baseline
- •provided valid responses regarding tea consumption, soft drink consumption, and sweetened fruit drink consumption,
- •provided blood samples with valid serum uric acid data
排除标准
- 未提供
结局指标
主要结局
Hyperuricemia
时间窗: 1997-2009
Serum uric acid level ≥420 μmol/L in males and ≥360 μmol/L in females
次要结局
未报告次要终点