Table 2.

Normalized weight values and odds ratios (95% CI) of the main risk factors in the 4 population groups.

Risk factors	Population aged ≥65 years		Men aged ≥65 years			Women aged ≥65 years			All age groups
	Weight	Odds ratio (95% CI)	Weight	Odds ratio (95% CI)	Weight		Odds ratio (95% CI)	Weight		Odds ratio (95% CI)
Time since quitting	0.21	1.422 (0.806-1.095)	0.13	1.587 (0.776-0.998)	0.20		1.590 (0.927-1.358)	0.009		1.109 (0.993-1.322)
Smoking frequency	0.11	1.312 (0.796-0.998)	0.18	1.625 (0.866-1.097)	0.16		1.536 (1.106-1.427)	0.14		1.370 (1.352-1.701)
Cancer history	0.099	1.295 (0.876-1.027)	0.09	1.387 (1.239-1.667)	0.11		1.442 (0.951-1.356)	0.09		1.271 (0.852-1.201)
Smoking quit attempts	0.091	1.253 (0.933-1.201)	0.06	1.273 (1.413-1.702)	0.07		1.368 (1.127-1.406)	0.20		1.405 (0.995-1.381)
Lifetime smoking of ≤100 cigarettes	0.081	1.239 (1.336-1.587)	0.11	1.506 (0.681-0.937)	0.18		1.588 (1.237-1.601)	0.16		1.387 (1.225-1.611)
Asthma history	0.08	1.303 (1.029-1.403)	0.005	1.095 (0.962-1.329)	0.07		1.381 (0.953-1.317)	0.007		1.112 (0.961-1.406)
Radiation	0.08	1.224 (1.550-1.781)	0.09	1.291 (0.983-1.307)	0.12		1.453 (1.302-1.759)	0.03		1.190 (0.952-1.357)
E-cigarette use	0.023	1.025 (0.766-0.934)	0.12	1.539 (1.112-1.406)	0.005		1.135 (0.897-1.309)	0.074		1.239 (0.851-1.307)
Physical activity	0.023	1.132 (0.983-1.246)	0.01	1.170 (0.851-1.209)	0.03		1.280 (0.991-1.308)	0.08		1.268 (1.131-1.670)