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Table 4 Association between exposure to outdoor air pollutants during pregnancy with low birth weight

From: The effect of exposure to traffic related air pollutants in pregnancy on birth anthropometry: a cohort study in a heavily polluted low-middle income country

Outdoor air pollutant (n = 340)

OR (95% confidence interval)

PM2.5

 Crude

0.88 (0.35; 2.19)

 Adjusted

1.04 (0.31; 3.46)

Soot

 Crude

1.34 (0.73; 2.48)

 Adjusted

1.73 (0.78; 3.83)

NOx

 Crude

1.12 (0.67; 1.86)

 Adjusted

1.33 (0.68; 2.59)

NO2

 Crude

1.09 (0.65; 1.84)

 Adjusted

1.10 (0.58; 2.06)

  1. All effect estimates correspond to interquartile increase of each air pollutant i.e. every 7.14 μg/m3 for PM2.5, 0.75 × 10− 5 per m for soot, 4.68 μg/m3 for NOx, and 3.74 μg/m3 for NO2
  2. Adjusted for gestational age, parity, SES, mother’s working status, mother’s age at pregnancy, delta BMI during pregnancy, infant’s sex, passive smoking exposure, pregnancy complication
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Environmental Health

ISSN: 1476-069X