Effect of illness perceptions on asthma control and quality of life amongst adult outpatients with asthma in China

Table 3 Factors associated with uncontrolled asthma in adults in China

	Univariate logistic regression		Multivariate logistic regression
	Odds ratio (95% confidence interval)	P-value	Odds ratio (95% confidence interval)	P-value
Age	1.02 (1.01–1.04)	0.010	1.01 (0.98–1.04)	0.698
Gender	0.79 (0.46–1.38)	0.415
Duration of ICS use	1.06 (1.01–1.13)	0.031	0.95 (0.85–1.05)	0.287
Duration of asthma
> 10 years	3.03 (1.64–5.61)	0.000	3.07 (1.04–9.05)	0.042
FEV1% predicted	0.98 (0.97–0.99)	0.009	1.00 (0.98–1.02)	0.831
BIP-1 Consequences	1.38 (1.22–1.56)	0.000	1.17 (0.95–1.45)	0.135
BIP-2 Timeline	1.04 (0.95–1.13)	0.449
BIP-3 Personal control	0.77 (0.67–0.87)	0.000	0.75 (0.62–0.90)	0.003
BIP-4 Treatment control	0.91 (0.80–1.03)	0.128
BIP-5 Identity	1.36 (1.21–1.53)	0.000	1.05 (0.86–1.29)	0.620
BIP-6 Concerns	1.04 (0.91–1.20)	0.533
BIP-7 Comprehension	0.98 (0.88–1.08)	0.670
BIP-8 Emotional response	1.17 (1.06–1.29)	0.002	1.15 (0.97–1.36)	0.105
Medication adherence	0.65 (0.50–0.84)	0.001	0.59 (0.40–0.88)	0.009

ACT Asthma control test; BIP Brief illness perception; ICS Inhaled corticosteroid; FEV1 Forced expiratory volume in 1 s

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