TABLE 5.

Adjusted OR for Various Ranges of Cigarette Consumption for Daily Smokers With and Without Asthma and Stratified According to Gender*

No. of Cigarettes per DayDaily Smokers
No. of Smokers (Asthma/Controls)AllGirlsBoys
OR95% CIOR95% CIOR95% CI
1–444/4890.830.59–1.160.870.59–1.280.760.37–1.56
5–9127/1,1690.990.78–1.250.990.75–1.310.990.63–1.56
10–1484/9580.790.61–1.030.740.54–1.030.950.60–1.49
≥1599/7371.471.13–1.911.511.10–2.071.260.80–1.99
  • * We adjusted in both logistic regression analysis and multiple linear regression for gender, age (1-year categories), family type, parents’ smoking pattern and job, BMI, and exercise habits categorized as shown in Table 1. Tests for asthma-gender interaction were not statistically significant. Information on cigarette consumption was missing for 3 pupils with asthma and 15 without asthma.