Table 2.

Within-Group and Between-Group Intervention Effects on Outcomes

	Nurse-Only Group (n=153)				Nurse + CHW Group (n= 156)				Intervention Effect
Characteristic	Baseline	Exit	Change (95% CI)	P Value	Baseline	Exit	Change (95% CI)	P Value	Coefficient/ORa (95% CI)	P Valueb
Primary Outcomes
Symptom-free days/2 wk, mean	9.5	10.8	1.3 (0.5 to 2.1)	.003	9.3	11.3	1.9 (1.1 to 2.8)	<.001	0.94 (0.02 to 1.86)	.046
Caregiver quality of life score, mean	5.6	6.0	0.4 (0.3 to 0.6)	<.001	5.6	6.2	0.6 (0.4 to 0.8)	<.001	0.22 (0.00 to 0.44)	.049
Used urgent health services within last 3 mo, %	49.0	31.4	−17.6 (−27.2 to −0.08)	<.001	47.4	24.4	−23.1 (−32.6 to −13.6)	<.001	0.69 (0.38 to 1.26)	.23
Secondary Outcomes
No. of days/2 wk with activity limitation, mean	1.9	1.1	−0.8 (−1.4 to −0.2)	.01	1.8	0.9	−0.9 (−1.5 to −0.4)	.002	−0.22 (−0.79 to 0.36)	.46
No. of days/2 wk used β2-agonist, mean	3.2	2.6	−0.5 (−1.2 to 0.1)	.08	3.7	2.1	−1.6 (−2.4 to −0.7)	<.001	−0.59 (−1.45 to 0.26)	.18
No. of asthma attacks within last 3 mo, mean	2.1	1.2	−0.8 (−1.8 to 0.1)	.07	2.6	0.8	−1.8 (−2.7 to −0.9)	<.001	−0.50 (−1.04 to 0.04)	.07
Child missed school ≥1 times/2 wk, %	18.3	11.8	−6.5 (−13.4 to 0.00)	.04	16.7	9.0	−7.7 (−15.1 to −.00)	.03	0.81 (0.35 to 1.88)	.62
Adult missed work ≥1 times/2 wk, %	12.4	6.5	−5.9 (−11.7 to 0.00)	.03	9.6	3.8	−5.8 (−11.8 to 0.00)	.04	0.60 (0.20 to 1.78)	.35

Abbreviations: CHW, community health worker; CI, confidence interval; OR, odds ratio.

^aThe coefficient of the group assignment term is reported for continuous variables and the logistic OR (nurse + CHW vs nurse-only groups) is reported for categorical variables.

^bDifference between groups adjusted for baseline differences in asthma severity, race/ethnicity, housing tenure, and season.