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Table 2 Exposure to PM2.5 and O3 and Ambient Temperature for the Longitudinal Study Population of Women Residing in North Carolina Who Delivered at Least 2 Singleton Neonates, 2002-2006

From: A longitudinal study of exposure to fine particulate matter during pregnancy, small-for-gestational age births, and birthweight percentile for gestational age in a statewide birth cohort

Exposure variable First trimester Second trimester Third trimester Whole pregnancy
Mean (IQR) Min, Max Mean (IQR) Min, Max Mean (IQR) Min, Max Mean (IQR) Min, Max
Non-Hispanic black women (n = 13,797)
 PM2.5 13.6 (3.16) 7.32, 22.1 13.7 (3.26) 7.18, 22.4 13.7 (3.30) 5.64, 27.34 13.7 (1.89) 7.99, 19.1
 O3 43.2 (17.4) 24.2, 70.3 43.5 (16.8) 24.2, 70.5 43.0 (17.5) 23.1, 77.2 43.2 (5.67) 30.0, 60.2
 Temperature (°F) 60.3 (23.0) 30.4, 84.4 61.0 (23.0) 35.4, 83.5 60.9 (23.2) 31.8, 84.1 60.7 (7.80) 43.1, 76.0
Non-Hispanic white women (n = 39,617)
 PM2.5 13.5 (3.55) 6.59, 21.5 13.5 (3.39) 6.68, 22.2 13.6 (3.54) 6.59, 25.7 13.5 (1.94) 7.55, 18.6
 O3 43.4 (16.7) 24.2, 71.1 43.5 (16.5) 24.2, 71.3 43.5 (16.5) 21.4, 73.5 43.5 (5.62) 28.7, 60.9
 Temperature (°F) 59.7 (23.1) 24.7, 85.8 59.8 (22.5) 24.4, 83.6 60.2 (23.5) 22.6, 84.3 59.9 (7.62) 36.4, 78.1