Table 1.

Subject characteristics used in the study

	Training cohort	Testing cohort
	(N = 133)	(N = 113)
Age (in years), n (%)
<12	94 (71%)	80 (71%)
≥12	39 (29%)	33 (29%)
Sex, n (%)
Male	76 (57%)	67 (59%)
Female	57 (43%)	46 (41%)
Race/ethnicity, n (%)
Non-Hispanic Whites	76 (60%)	67 (60%)
African Americans	18 (14%)	9 (8%)
Asians	10 (8%)	13 (12%)
Hispanics	9 (7%)	11 (10%)
Other categories	14 (11%)	12 (11%)
Missing	6	1
HOUSES, n (%)
Q1 (the lowest SES)	22 (18%)	15 (14%)
Q2–Q4	102 (82%)	92 (86%)
Missing	9	6
Chronic condition, n (%)
Yes	30 (23%)	19 (17%)
No	103 (77%)	94 (83%)
National ADI, n (%)
76–100 (the lowest SES)	6 (7%)	6 (8%)
0–75	76 (93%)	65 (92%)
Missing	51	42
Asthma exacerbation, n (%)
Yes	34 (26%)	40 (35%)
No	99 (74%)	73 (65%)