Table 2

Demographic characteristics of the case and control populations


Case n (%)
Control n (%)
OR(95%CI)
P

Male
60
60


Female
47
47


Mean age (yr)
62.9 ± 8.19
62.4 ± 8.35


Smoking status




     None-smoker
40(37.4)
43(40.2)
1.00

     Smoker
67(62.6)
64(59.8)
1.14(0.64–2.04)
0.67
Passive smoking




     No
37(34.6)
54(50.5)
1.00

     yes
70(65.4)
53(49.5)
2.04(1.14–3.70)
0.02
Drinking status




     None-drinker
60(56.1)
58(54.2)
1.00

     Drinker
47(43.9)
49(45.8)
1.06(0.77–1.43)
0.70
Income (Yuan, Mean ± SD)




     Total
486.4 ± 425.80
592.0 ± 590.63
1.0(0.99~1.0)
0.10
     Average
127.2 ± 98.68
148.2 ± 122.28
0.998(0.995~1)
0.15
Family history of cancer




     Negative
39(36.4)
49(45.8)
1.00

     Positive
68(63.6)
58(54.2)
2.90(1.41–5.95)
<0.01

Wang et al. BMC Cancer 2006 6:287   doi:10.1186/1471-2407-6-287