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. Author manuscript; available in PMC: 2013 Jun 17.
Published in final edited form as: Pediatr Allergy Immunol. 2010 Apr 27;21(4 0 2):e723–e732. doi: 10.1111/j.1399-3038.2010.01034.x

Table 2.

Number of wheezing days occurring in the follow-up periods according to the level of prenatal exposure to PAHs (PAH-DNA adducts)

Follow-up
periods		 N Mean SE 95%CI interval
exact Poisson
PAH-DNA
adducts <=0.250
1 – 2 years 150 3.35 0.15 3.06 – 3.65
3 – 4 years 119 3.53 1.17 3.21 – 3.89
PAH-DNA
adducts>0.250
1 – 2 years 267 5.55 0.14 5.28 – 5.84
3 –4 years 219 2.65 0.11 2.44 – 2.87