Associations between comorbidities and annual incidence plus frequency of asthma exacerbation hospitalisation during the past year: data from CARN study

Table 3 Associations between comorbidities and incidence of H-AX during the past year

Comorbidities	OR	95% CI	P value
Allergic rhinitis	0.692	(0.588, 0.815)	< 0.001*
Nasosinusitis	1.116	(0.839, 1.485)	0.449
Rhinopolypus	1.065	(0.664, 1.708)	0.794
Food allergy	1.282	(0.928, 1.773)	0.132
COPD	2.189	(1.673, 2.863)	< 0.001*
Bronchiectasis	1.379	(0.921, 2.066)	0.119
OSAHS	0.953	(0.607, 1.497)	0.834
Hypertension	1.107	(0.894, 1.369)	0.351
CHD	1.387	(1.032, 1.864)	0.030*
Obesity	1.079	(0.581, 2.004)	0.809
Diabetes	1.284	(0.922, 1.787)	0.140
GERD	0.776	(0.509, 1.183)	0.239
CVD	0.399	(0.203, 0.783)	0.008*
Depression	0.887	(0.300, 2.623)	0.828
Anxiety	1.076	(0.599, 1.935)	0.805
Osteoporosis	1.039	(0.584, 1.850)	0.896

Data are presented as mean ± standard deviation (SD) or percentage (n/N)
OR, Odds ratio; CI, Confidence interval; H-AX, Hospitalisation due to asthma exacerbation; BMI, body mass index; COPD, chronic obstructive pulmonary disease; OSAHS, obstructive sleep apnea–hypopnea syndrome; CHD, Coronary heart disease; GERD, gastroesophageal reflux disease; CVD, Cerebrovascular disease
Collinearity test was conducted prior to regression test. The VIF value of height, weight and BMI was greater than 10, which indicated high collinearity. Thus height, weight and BMI was not included in regression model. Other confounding factors which passed collinearity test (gender, age, smoking history, asthma control level) were included in regression model
*Data with statistical significance

ISSN: 1471-2466