细颗粒物和非意外和因特定原因的死亡率:根据暴露评估方法,相关性是否有所不同?
Jochem O Klompmaker1,2, Peter James1,3,4, Joel D Kaufman5
1Department of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, Massachusetts.
Environmental epidemiology (Philadelphia, Pa.)
|December 24, 2024
概括
不同的细颗粒物 (PM2.5) 暴露模型在美国护士的死亡率关联中显示了类似的结果. 虽然没有发现与整体死亡率的联系,但PM2.5暴露与癌症,心血管和呼吸道死亡有关.
科学领域:
- 环境健康 环境健康
- 流行病学 流行病学
- 毒理学 毒理学 毒理学
背景情况:
- 细颗粒物 (PM2.5) 暴露与死亡率有关,但研究结果有所不同,可能是由于不同的暴露评估方法.
- 了解这些变化对于准确的风险评估和公共卫生政策至关重要.
研究的目的:
- 评估不同时空模型预测的PM2.5度与非意外和因特定死亡率之间的关联.
- 来自华盛顿大学 (UW),宾夕法尼亚州立大学 (PSU) 和哈佛TH Chan公共卫生学院 (HSPH) 的PM2.5暴露模型的性能进行比较.
主要方法:
- 从2001年到2016年,从护士健康研究中对107,906名参与者的队列进行了跟踪.
- 用UW,PSU和HSPH的时空模型估计了PM2.5度.
- 时间变化的Cox比例危险比率 (HRs) 计算了非意外死亡率和特定原因死亡率.
主要成果:
- 在三个模型中的PM2.5预测之间观察到高相关性和类似的时间趋势.
- 在所有模型中,PM2.5和非意外死亡率之间没有发现显著的关联.
- 对癌症,心血管和呼吸道疾病的死亡率观察到暗示性的积极关联,与癌症死亡率的联系最强 (HRs在1.05至1.08之间,每增加5μg/m3).
- 在PM2.5低于12μg/m3的子组中,观察到与非意外死亡率的积极关联.
结论:
- 在PM2.5暴露评估方法的差异导致美国女护士因特定原因死亡率的关联强度略有变化.
- 这些发现强调了在对空气污染和健康的流行病学研究中对暴露的一致评估的重要性.
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