Chronic productive cough in school children: prevalence and associations with asthma and environmental tobacco smoke exposure

Cough

Table 2 Adjusted multivariate associations of asthma and ETS exposure with CPC

Condition	Students with CPC N = 173	Students without CPC N = 2224	Odds Ratio [95% CI]
Current Asthma	82 (47%)*	214 (10%)	5.2 [3.6–7.5]
ETS exposure	43 (25%)	180 (8%)	2.9 [1.4–9.4]
Allergic Rhinitis	103 (60%)	549 (25%)	2.6 [1.9–3.8]
Female gender	108 (62%)	1108 (50%)	1.5 [1.0–2.1]

*The numbers in parentheses are the percent of students in each group who have the condition; i.e., 82/173 (47%) of children with CPC had current asthma.