Table 3 Hazard ratios based on Cox regression analysis of adult new-onset wheeze, by smoking exposure

Current smoking at baseline^b

NA^a

NA^a

NA^a

2.1 (1.7–2.7)

Ex-smoking at baseline^b

NA^a

NA^a

NA^a

1.4 (1.1–1.9)

Female gender^b

1.1 (0.8–1.5)

1.6 (0.99–2.4)

0.9 (0.7–1.3)

1.1 (0.9–1.4)

Rhinitis at baseline^b

1.7 (1.2–2.4)

1.6 (1.0–2.6)

2.0 (1.4–2.9)

1.8 (1.4–2.2)

Atopic at baseline^b

0.9 (0.5–1.4)

1.3 (0.8–2.3)

1.1 (0.7–1.6)

1.0 (0.8–1.3)

CB at baseline^b

1.2 (0.2–8.9)

1.7 (0.2–12.6)

4.5 (1.4–14)

2.3 (0.96–5.7)

20–30 years at baseline^b

1.7 (1.1–2.5)

1.8 (0.9–3.4)

1.5 (1.0–2.4)

1.7 (1.3–2.2)

41–50 years at baseline^b

1.2 (0.8–1.8)

1.5 (0.8–2.5)

1.1 (0.6–1.7)

1.2 (0.9–1.6)

BMI ≥30 (2003)^b

2.1 (1.4–3.2)

1.9 (1.1–3.4)

2.0 (1.2–3.2)

1.9 (1.5–2.6)