Table 1.

Summary of characteristics of participants in the studies included in the meta-analysis of CpG sites (associated with stress or violence measures in EVA-PR) and atopic asthma.

	EVA-PR (n=272)	PIAMA (n=246)	Project Viva (n=156)
Age in years (mean ± SD)	15.5±3.1	16.3±0.2	12.9±0.6
Male gender (n, %)	144(52.9)	111 (47.0)	79(50.6)
Race/ethnicity
White		239(97.2)	110(70.5)
Black			21(13.5)
Hispanic or Latino	272 (100)		8(5.1)
Asian			5(3.2)
More than one race/unknown		7 (2.8)	12(7.7)
Atopic asthma (n, %)	167(61.4)	27(11.0)	36(23.1)
Study sites	San Juan (Puerto Rico)	The Netherlands	Boston (MA)
Methylation platform	Infinium HumanMethylation450 BeadChips	Infinium HumanMethylation450 BeadChips	Infinium MethylationEPIC BeadChip