Table I.
Select characteristics and risk factors in patients with gastric cancer and controls from the Tibet, Hui and Han nationalities.
| Variables | Tibet | Hui | Han | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|
|
|
||||||||||
| Cases (%) (n=219) | Controls (%) (n=286) | χ2 | P value | Cases (%) (n=233) | Controls (%) (n=315) | χ2 | P value | Cases (%) (n=265) | Controls (%) (n=350) | χ2 | P-value | |
| Age (years) | ||||||||||||
| <35 | 4 (1.82) | 6 (2.10) | 0.047 | 0.828 | 3 (1.29) | 3 (0.95) | 0.139 | 0.709 | 7 (2.64) | 8 (2.29) | 0.080 | 0.777 |
| 35–60 | 116 (52.97) | 152 (53.15) | 0.002 | 0.968 | 112 (48.07) | 157 (49.84) | 0.168 | 0.682 | 132 (49.81) | 182 (52.00) | 0.289 | 0.591 |
| ≥60 | 99 (4521) | 128 (44.75) | 0.010 | 0.920 | 118 (50.64) | 155 (49.21) | 0.111 | 0.739 | 126 (47.55) | 160 (45.71) | 0.203 | 0.652 |
| Gender | ||||||||||||
| Male | 162 (73.97) | 209 (73.08) | 0.051 | 0.821 | 173 (74.25) | 223 (70.79) | 0.798 | 0.372 | 198 (74.72) | 262 (74.86) | 0.001 | 0.968 |
| Female | 57 (26.27) | 77 (26.92) | 60 (25.75) | 92 (29.21) | 67 (25.28) | 88 (25.14) | ||||||
| Smoking | ||||||||||||
| Yes | 140 (63.93) | 186 (65.03) | 0.067 | 0.796 | 42 (18.03) | 62 (19.68) | 0.239 | 0.625 | 175 (66.04) | 221 (63.14) | 0.551 | 0.511 |
| No | 79 (36.07) | 100 (34.97) | 191 (81.97) | 253 (80.32) | 90 (33.96) | 129 (36.86) | ||||||