Table 2.

Demographic table for controls and cases.

Variables	Case (n = 300)	Controls (n = 300)	Odds ratio (95% CI)	p value
Age (Y) mean (57) ± SD (12.9)
< 57, n (%)	172 (57%)	116 (39%)	2.13 (1.34–3.38)	0.0013
> 57, n (%)	128 (43%)	184 (61%)
Gender
Male	186 (62%)	144 (48%)	1.76 (1.11–2.79)	0.0152
Female	114 (38%)	156 (52%)
Smoking status
Smokers	228 (76%)	176 (59%)	2.23 (1.35–3.66)	0.0015
Nonsmokers	72 (24%)	124 (41%)

Note: n = total number; p < x²-test, chi-square test.

Abbreviations: AOR = adjusted odds ratio, CI = confidence interval.