Table 1.

Characteristics of participants in the EVA-PR^* and BAMSE^** studies

	EVA-PR* (n = 460)		BAMSE** (n = 250)
	Atopy (n=300)	No atopy (n=160)	Atopy (n=134)	No atopy (n=116)
Age (y)	15.2 (10–20)	15.7 (10–21)	16.7 (16.0–17.9)	16.7 (15.9–18.1)
Sex (female)	131 (43.7%)	87 (54.4%)	47 (35.1%)	59 (50.9%)
Asthma	165 (55%)	63 (39.4%)	42 (31.3%)	10 (8.6%)
Sensitization to:
Dust mite	282 (94%)		48 (35.8%)
Cat dander	49 (16.3%)		72 (53.7%)
Dog dander	168 (56%)		85 (63.4%)
Mouse urinary protein	12 (4%)		Not measured
Cockroach	174 (58%)		Not measured

Data are shown as mean (range) for continuous variables, and as number (percentage) for categorical variables.

^*EVA-PR= Epigenetic variation and childhood asthma in Puerto Rico

^**BAMSE= Children, Allergy, Milieu, Stockholm, Epidemiological Survey birth cohort study