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Table 2 Exposure details on PM2.5 and NO2 air pollution (μg/m3) during different time windows of pregnancy and different periods during the childhood of the participants (n = 245)

From: Children’s microvascular traits and ambient air pollution exposure during pregnancy and early childhood: prospective evidence to elucidate the developmental origin of particle-induced disease

Type of air pollution exposure and time windowMean (SD)25th percentile75th percentileIQR
PM2.5
 Pregnancy
  Trimester 114.3 (5.5)9.618.28.6
  Trimester 214.2 (5.1)9.617.98.3
  Trimester 314.2 (5.7)9.118.39.2
  Entire pregnancy14.3 (2.3)12.615.83.2
 Childhood
  Day of follow-up visit11.2 (8.3)4.815.110.3
  Day before follow-up visit12.1 (10.2)4.515.911.4
  Week before follow-up visit13.0 (7.5)7.317.710.4
  Average childhood exposure12.6 (1.1)11.913.31.4
NO2
 Pregnancy
  Trimester 119.9 (6.0)15.224.39.1
  Trimester 219.8 (6.2)15.024.19.1
  Trimester 319.6 (6.2)14.723.79.0
  Entire pregnancy19.7 (4.4)16.522.76.2
 Childhood
  Day of follow-up visit17.0 (8.7)10.521.310.8
  Day before follow-up visit17.2 (9.5)9.722.813.1
  Week before follow-up visit17.2 (7.2)11.721.710.0
  Average childhood exposure17.2 (3.4)14.619.34.7
  1. Abbreviations: IQR interquartile range, NO2 nitrogen dioxide, PM2.5 particulate matter with a diameter smaller than 2.5 μm, SD standard deviation