Table 4.

Associations of OSA risk^* with asthma-related health care utilization and quality of life.

	Univariate Analyses†		Multivariate Analyses†‡
	Parameter estimate or OR (95% CI)	P-value	Parameter estimate or OR (95% CI)	P-value
Health care utilization in the past year:
hx/o MD visits	1.50 (1.13, 2.01)	0.006	1.15 (0.76, 1.73)	0.52
hx/o ER visits	1.48 (1.11, 1.97)	0.008	1.35 (0.91, 2.00)	0.14
hx/o hospitalizations	1.96 (1.33, 2.89)	0.0007	1.50 (0.90, 2.52)	0.12
hx/o ER visits or hospitalizations	1.54 (1.16, 2.05)	0.003	1.30 (0.88, 1.93)	0.18
hx/o ICU admission	1.61 (0.92, 2.81)	0.09	1.41 (0.68, 2.95)	0.36
Health care utilization ever:
hx/o ER visits	1.62 (1.21, 2.18)	0.001	1.45 (0.96, 2.20)	0.08
hx/o hospitalizations	1.46 (1.13, 1.90)	0.005	1.10 (0.76, 1.59)	0.60
hx/o ICU admission	1.59 (1.11, 2.29)	0.01	1.35 (0.83, 2.20)	0.23
hx/o assisted ventilation	2.06 (1.32, 3.22)	0.002	1.87 (1.05, 3.35)	0.03
AQLQ
total score	-0.53 (-0.67, -0.38)	<0.0001	-0.40 (-0.61, -0.20)	0.0002
symptoms	-0.53 (-0.70, -0.37)	<0.0001	-0.42 (-0.65, -0.19)	0.0004
activities	-0.49 (-0.65, -0.34)	<0.0001	-0.34 (-0.55, -0.13)	0.002
emotions	-0.59 (-0.79, -0.39)	<0.0001	-0.48 (-0.76, -0.21)	0.0007
environment	-0.51 (-0.69, -0.33)	<0.0001	-0.41 (-0.66, -0.10)	0.001

^*Sleep Apnea scale of the Sleep Disorders Questionnaire score normalized by its standard deviation.

^†Analyses used general linear models (for continuous dependent variables) or logistic regression (for dichotomous dependent variables).

^‡Adjusted for age, gender, race and obesity.

Abbreviations: OR=odds ratios; CI= confidence interval; AQLQ=Asthma Quality of Life Questionnaire.