Table 1. Distribution of selected characteristics among case and control subjects.
| Variables | Case (%) n = 302 | Control (%) n = 574 | P value |
|---|---|---|---|
| Age (years) | 0.149 | ||
| ≤44 | 46(15.23) | 117(20.38) | |
| 45-59 | 143(47.35) | 279(48.61) | |
| 60-74 | 87(28.81) | 137(23.87) | |
| ≥75 | 26(8.61) | 41(7.14) | |
| Gender | 0.104 | ||
| Male | 200(66.23) | 348(60.63) | |
| Female | 102(33.77) | 226(39.37) | |
| Education Level | <0.001 | ||
| Illiteracy | 40(13.25) | 71(12.37) | |
| Primary-Middle school | 189(62.58) | 256(44.60) | |
| High school or above | 73(24.17) | 247(43.03) | |
| Marital status | 0.113 | ||
| Married | 268(88.74) | 528(91.99) | |
| Others | 34(11.26) | 46(8.01) | |
| Residence | <0.001 | ||
| Rural | 154(50.99) | 161(28.05) | |
| Urban | 148(49.01) | 413(71.95) | |
| Family history of cancer | 0.660 | ||
| No | 235(77.81) | 454(79.09) | |
| Yes | 67(22.19) | 120(20.91) | |
| Tobacco smoking | <0.001 | ||
| No | 143(47.35) | 408(71.08) | |
| Yes | 159(52.65) | 166(28.92) | |
| Alcohol drinking | <0.001 | ||
| No | 179(59.27) | 459(79.97) | |
| Yes | 123(40.73) | 115(20.03) | |
| Vegetables | <0.001 | ||
| ≤1 time/day | 139(46.03) | 168(29.27) | |
| >1times/day | 163(53.97) | 406(70.73) | |
| Fruits | <0.001 | ||
| ≤3 times/week | 233(77.15) | 276(48.08) | |
| >3 times/week | 69(22.85) | 298(51.92) |