Table 4.

Multiple regression analysis.

				95,0% C.I. for Exp (B)
	B	S.E.	Sig.	Exp (B)	Lower	Upper
Gender: F	1.161	0.531	0.029*	3.195	1.12	9.04
Age			0.007**
Age: 40–59	1.637	0.549	0.003**	5.141	1.754	15.06
Age: ≥60	1.877	0.733	0.010*	6.531	1.552	24.47
Age of onset ≥ 40	0.095	0.572	0.869	1.099	0.358	3.376
Smoking			0.417
Ex-smoker	0.894	0.731	0.221	2.446	0.583	10.25
Active smoker	0.056	0.533	0.917	1.057	0.372	3.007
Passive smoker	1.275	1.236	0.241	0.476	0.138	1.644