A review and analysis of personal and ambient PM2.5 measurements: Implications for epidemiology studies

被引:16
作者
Boomhower, Steven R. [1 ,2 ]
Long, Christopher M. [1 ]
Li, Wenchao [1 ]
Manidis, Tatiana D. [1 ]
Bhatia, Arunika [1 ]
Goodman, Julie E. [1 ]
机构
[1] Gradient, One Beacon St, Boston, MA 02108 USA
[2] Harvard Univ, Harvard Div Continuing Educ, Cambridge, MA 02138 USA
关键词
Air pollution; Exposure assessment; Monitoring methods; FINE PARTICULATE MATTER; HOUSEHOLD AIR-POLLUTION; EXPOSURE ASSESSMENT; PREGNANT-WOMEN; ELEMENTAL COMPOSITION; SOURCE APPORTIONMENT; GENERATED EXPOSURE; GASEOUS-POLLUTANTS; CHINESE MEGACITY; OUTDOOR PM2.5;
D O I
10.1016/j.envres.2021.112019
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Background: In epidemiology studies, ambient measurements of PM2.5 are often used as surrogates for personal exposures. However, it is unclear the degree to which ambient PM2.5 reflects personal exposures. Objective: In order to examine potential sources of bias in epidemiology studies, we conducted a review and metaanalysis of studies to determine the extent to which short-term measurements of ambient PM2.5 levels are related to short-term measurements of personal PM2.5 levels. Methods: We conducted a literature search of studies reporting both personal and ambient measurements of PM2.5 published in the last 10 years (2009-2019) and incorporated studies published prior to 2009 from reviews. Results: Seventy-one studies were identified. Based on 17 studies reporting slopes, a meta-analysis revealed an overall slope of 0.56 mu g/m3 (95% CI: [0.39, 0.73]) personal PM2.5 per mu g/m3 increase in ambient PM2.5. Slopes for summer months were higher (slope = 0.73, 95% CI: [0.64, 0.81]) than for winter (slope = 0.46, 95% CI: [0.36, 0.57]). Based on 44 studies reporting correlations, we calculated an overall personal-ambient PM2.5 correlation of 0.63 (95% CI: [0.55, 0.71]). Correlations were stronger in studies conducted in Canada (r = 0.86, 95% CI: [0.67, 0.94]) compared to the USA (r = 0.60, 95% CI: [0.49, 0.70]) and China (r = 0.60, 95% CI: [0.46, 0.71]). Correlations also were stronger in urban areas (r = 0.53, 95% CI: [0.43, 0.62]) vs. suburban areas (r = 0.36, 95% CI: [0.21, 0.49]). Significance: Our results suggest a large degree of variability in the personal-ambient PM2.5 association and the potential for exposure misclassification and measurement error in PM2.5 epidemiology studies.
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页数:13
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