Table 2 Association of SO2 with bilirubin levels for a 1.0 μg per m3 increase

From: Air pollution exposure associates with increased risk of neonatal jaundice

Exposure intervals (μg per m3)

Estimated risk in peak bilirubin levels (mg per dL)

Confidence lower limit (mg per dL)

Confidence upper limit (mg per dL)

P value

(0, 5)

0.082

−0.157

0.321

0.327

(5, 10)

0.028

−0.113

0.17

0.776

(10, 15)

0.094

0.077

0.111

<0.001

>15

0.161

0.07

0.252

<0.001

  1. For SO2 concentrations below 10 μg per m3, the SO2–bilirubin level association was not statistically significant. For SO2 concentrations ∈ (10, 15) (μg per m3), a 1.0 μg per m3 increase in SO2 concentration was associated with a 0.094 mg per dL (95% CI: 0.077–0.111) rise in the peak bilirubin level. And for SO2 concentrations above 15 μg per m3, a 1.0 μg per m3 increase in SO2 concentration was associated with a 0.161 mg per dL (95% CI: 0.07–0.252) rise in the peak bilirubin level
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