TABLE 4.

Univariate (unadjusted) predictors of increased hazard of >1 ED visit at 12 months for ALL participants and allergen sensitization only participants

	All participants N = 222		Allergen sensitized only participants N = 160 (80 per group) HRa (95%CI) P-value
	HRa (95%CI)	P-value
INT vs CON group	1.10 (0.76–1.69)	0.61	1.10 (0.72, 1.67) 0.66
Child characteristics
Age of child, years	0.96 (0.89–1.03)	0.23	0.95 (0.87, 1.03) 0.22
Male child	1.16 (0.78–1.72)	0.45	1.06 (0.68, 1.65) 0.81
Poorb	1.16 (0.77–1.75)	0.47	1.36 (0.85, 2.17) 0.20
Season @ enrollment:		0.75	0.69
Fall (Sep-Nov)	-		-
Winter (Dec-Feb)	1.28 (0.82–2.02)	0.28	1.16 (0.68, 1.99) 0.58
Spring (Mar-May)	1.07 (0.64–1.77)	0.81	1.36 (0.79, 2.34) 0.27
Summer (Jun-Aug)	1.13 (0.60–2.12)	0.70	1.32 (0.67, 2.61) 0.42
Child health characteristics
Asthma severity:		0.20	0.13
Mild	-		-
Moderate	1.39 (0.86–2.26)	0.18	1.20 (0.71, 2.04) 0.49
Severe	1.60 (0.96–2.68)	0.07	1.75 (1.00, 3.05) 0.05
Allergen sensitization (>1 positive result)	1.46 (0.83–2.56)	0.19	-
SHS exposure positive(cotinine >1.0ng/mL)	0.94 (0.65–1.37)	0.75	0.89 (0.58, 1.37) 0.60
Asthma medication characteristics
# Controllers fills/pre year	1.04 (1.00–1.07)	0.03	1.04 (0.99, 1.08) 0.08
AMR (pre year) <0.50	0.72 (0.49–1.07)	0.11	0.73 (0.47, 1.14) 0.17
SABA (pre year) >4 fills	1.58 (1.09–2.29)	0.02	1.44 (0.94, 2.20) 0.10
Caregiver worried about medication side effects	1.25 (0.86–1.83)	0.25	1.14 (0.74, 1.74) 0.55

Based on cox proportional hazards regression.

^aHR represents hazard of ED visit in any interval per unit increase for continuous variables and in patients represented by factor level listed versus reference category for categorical variables (eg, male vs female children).

^bPoor defined by “Federal Poverty Level 2015 threshold” that considers family income and number living in household.