THE SIXTH PHASE OF THE AGRICULTURAL HEALTH STUDY CONTRACT

农业健康研究（AHS）是一项对来自爱荷华州和北卡罗来纳州的一组有执照的农药施用者及其配偶进行的癌症和其他健康结果的前瞻性研究。这项研究的目的是研究农业、生活方式和遗传因素如何影响农业人口的健康。1993年至1997年间，爱荷华州和北卡罗来纳州有89000多名农民及其配偶参加了该项目。自入组以来，进行了随访问卷调查，以更新队列中的各种暴露和健康结果。此外，该队列还定期与疾病和死亡率登记处联系起来。AHS由国家癌症研究所和国家环境健康科学研究所与美国环境保护局合作资助。

The Agricultural Health Study (AHS) is a prospective study of cancer and other health outcomes in addition to cancer in a cohort of licensed pesticide applicators and their spouses from Iowa and North Carolina. The objective of the study is to examine how agriculture, lifestyle and genetic factors affect the health of farming populations. More than 89,000 farmers and their spouses in Iowa and North Carolina were enrolled between 1993 and 1997. Since enrollment, follow‐up questionnaires have been conducted to update various exposures and health outcomes among the cohort. In addition, the cohort is regularly linked to disease and mortality registries. The AHS is funded by the National Cancer Institute and the National Institute of Environmental Health Sciences in collaboration with the United States Environmental Protection Agency. In the sixth phase of the AHS contract, the Contractor shall serve as the coordinating center for all study activities.