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Table 2 Distributions of Pregnancy Average and Weekly Average Ambient Air Pollutants

From: Identifying pre-conception and pre-natal periods in which ambient air pollution exposure affects fetal growth in the predominately Hispanic MADRES cohort

Pollutant

Pregnancy Average Median (IQR)

Weekly Average

Median (IQR)

PM2.5 (\(\mu\) g/m3)

11.7 (2.2)

11.7 (1.9)

PM10 (\(\mu\) g/m3)

27.9 (7.1)

29.5 (6.5)

NO2 (ppb)

15.5 (5.6)

15.3 (5.6)

O3 (ppb)

42.3 (5.7)

42.9 (5.6)

  1. Note: PM2.5, PM10, and NO2 are from 24-h estimates, O3 represents the 8-h maximum
  2. Pregnancy average: from date of conception to date of ultrasound scan
  3. Weekly average: from 12 weeks preconception to 32 weeks of gestation
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Environmental Health

ISSN: 1476-069X