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. Author manuscript; available in PMC: 2022 Jan 15.
Published in final edited form as: Environ Pollut. 2020 Dec 3;269:116216. doi: 10.1016/j.envpol.2020.116216

Figure 1. Hazard ratios and 95% confidence intervals for the associations of residential exposure to PM10, PM2.5-10, and PM2.5 in different time windows with natural menopause by smoking status (A) and by region (B).

Figure 1

Abbreviations: HR, hazard ratio; CI, confidence interval; PM10, particulate matter with an aerodynamic diameters less than or equal to 10 microns; PM2.5-10, particulate matter with an aerodynamic diameters between 2.5 to 10 microns; PM2.5, particulate matter with an aerodynamic diameters less than or equal to 2.5 microns.

Note: Hazard ratios and 95% confidence intervals were calculated as per 10 μg/m3 increase of PM exposure and adjusted for age, calendar years, smoking, body mass index, physical activity, parity, age at first birth, histories of breastfeeding, female hormone use, oral contraceptives use, histories of rotating shift work, alternate healthy eating index, alcohol intake, marital status, diagnosis of endometriosis and uterine fibroids, race/ethnicity, age at menarche, regions, and Census tract median income, median home values, and population density.