Table 3.

Cox model for incident asthma during the first five years of follow-up.

	Women (N = 935)				Men (N = 1106)
	HR	p	CI	n	HR	p	CI	n
Age (years)	0.979	<0.001	0.973–0.985		0.962	<0.001	0.953–0.971
Body mass index class
Below 25 kg/m2	Ref	Ref	Ref	356	Ref	Ref	Ref	321
25–29.9 kg/m2	1.281	0.017	1.046–1.569	329	1.433	0.019	1.060–1.936	527
30 kg/m2 or over	1.258	0.062	0.988–1.602	250	1.357	0.086	0.958–1.921	258
Smoking
Never smoker	Ref	Ref	Ref	650	Ref	Ref	Ref	316
Ex-smoker	1.258	0.064	0.988–1.602	132	1.1070	0.630	0.813–1.408	362
Current smoker	0.930	0.561	0.729–1.1187	153	0.567	<0.001	0.411–0.782	428
Education tertile	1.053	0.372	0.940–1.178		1.016	0.834	0.876–1.179
Physical activity	1.135	0.048	1.001–1.287		1.050	0.598	0.875–1.260