. 2016 Sep 28;7(43):70475–70480. doi: 10.18632/oncotarget.12297

Table 1. Distributions of select characteristics by case-control status.

Variable	Cases (n = 554)	Controls (n = 696)	p-value
Sex			p < 0.001^a
Male	416	392
Female	138	304
Smoking status			p < 0.001^a
Smoking	352	293
Non-Smoking	202	403
Drinking status			0.35
Drinking	147	173
Non-drinking	407	423
Age, year (mean ± SD)	58.1 ± 10.5	48.6 ± 9.5	p < 0.05^b

p values were calculated from Chi-square tests.

p values were calculated by Student' t tests.