Table 1:

Demographic and clinical characteristics of the sample.

	All (n=505)	AR (n=275)	No AR (n=230)
Age (years)	16.4 ± 9.5	15.7± 10.0	17.3±8.9
Year of birth (median, IQR)	2003 [1999–2007]	2005 [2001–2007]	2002 [1998–2006]
Sex (females, %)	267 (52.8%)	130 (47.3%)	137 (59.6%)
Race
Asian	51 (10.1%)	13 (4.7%)	38 (16.6%)
Black	109 (21.6%)	61 (22.2%)	47 (20.1%)
Hawaiian/Pacific Islander	2 (0.4%)	1 (0.4%)	1 (0.4%)
White	216 (42.8%)	131 (47.6%)	85 (37.1%)
Multiple races/unknown	127 (25.1%)	69 (25.1%)	58 (25.2%)
Parental atopy	339 (67.1%)	213 (77.5%)	126 (54.8%)
Asthma	315 (62.4%)	209 (76%)	105 (45.7%)
Atopic dermatitis	246 (48.7%)	174 (63.5%)	72 (31.3%)