Table 3.

The effect of current smoking on chronic rhinosinusitis (CRS)

	Non-CRS	CRS	Unadjusted OR (95% CI)	Adjusted OR (95% CI)*
Cumulative years of tobacco smoke
Never smokers (reference)	7994	638	1	1
1–10	210	28	1.67 (1.12, 2.50)	1.27 (0.81, 2.00)
11–20	321	38	1.48 (1.05, 2.10)	1.47 (1.01, 2.15)
>20	907	109	1.51 (1.22, 1.87)	1.52 (1.18, 1.95)
Number of cigarettes smoked per day
1–5	387	47	1.52 (1.11, 2.08)	1.46 (1.05, 2.05)
6–10	496	62	1.57 (1.19, 2.06)	1.52 (1.12, 2.07)
11–20	429	43	1.26 (0.91, 1.74)	1.09 (0.75, 1.57)
>20	151	22	1.83 (1.16, 2.88)	1.85 (1.13, 3.06)

^*Adjusting for socio-economic factors, including gender, age, education attainment, household income, living space and number of bedrooms per person.