Table 3.

Risk factors of recurrent cough in the multivariate analysis (n = 222), compared to subjects with no cough (n = 3552)

Characteristic	Adjusted odds ratio and 95% confidence interval
Current asthma	3.32 (2.13–5.18) ***
Chronic rhinosinusitis	2.91 (1.89–4.46) ***
Family history of chronic cough	2.59 (1.88–3.56) ***
Analgesic intolerance	2.13 (1.27–3.57) **
Male gender	1.92 (1.39–2.66) ***
Gastro-esophageal reflux disease	1.73 (1.21–2.47) **
Obstructive sleep apnoea	1.69 (1.23–2.32) **
Symptom sum	1.12 per symptom (1.03–1.22) **
Age	0.96 per year (0.93–1.00) *

^*P < 0.05, **P < 0.01, ***P < 0.001