Table IV.
Association between HPV infection and clinicopathological and demographic factors in patients.
| Factor | Total, n (%) | HPV-negative, n (%) | HPV-positive, n (%) | P-value (χ2 or Fisher's exact test) |
| Gender | 1.000 | |||
| Male | 70 (70) | 66/70 (94.3) | 4/70 (5.7) | |
| Female | 30 (30) | 29/30 (96.7) | 1/30 (3.3) | |
| Location of tumor | <0.001 | |||
| Cardia | 35 (35) | 33/35 (94.3) | 2/35 (5.7) | |
| Body of stomach | 62 (62) | 61/62 (98.4) | 1/62 (1.6) | |
| Lower third of esophagus and upper stomach | 3 (3) | 1/3 (33.3) | 2/3 (66.7) | |
| Histology | <0.001 | |||
| Gastric adenocarcinoma | 88 (88) | 85/88 (96.6) | 3/88 (3.4) | |
| Gastric lymphoma | 9 (9) | 9/9 (100.0) | 0/9 (0.0) | |
| Esophagus and gastric adenocarcinoma | 3 (3) | 1/3 (33.3) | 2/3 (66.7) | |
| Weight | 0.583 | |||
| Weight loss | 78 (78) | 73/78 (93.6) | 5/78 (6.4) | |
| No weight loss | 22 (22) | 22/22 (100.0) | 0/22 (0.0) | |
| Smoking | 0.669 | |||
| Smoker | 48 (48) | 45/48 (93.8) | 3/48 (6.3) | |
| Non smoker | 52 (52) | 50/52 (96.2) | 2/52 (3.8) | |
| Alcohol usage | 1.000 | |||
| Alcohol use | 16 (16) | 15/16 (93.8) | 1/16 (6.3) | |
| No alcohol use | 84 (84) | 80/84 (95.2) | 4/84 (4.8) | |
| Family history of gastric cancer | 0.068 | |||
| Yes | 57 (57) | 52/57 (91.2) | 5/57 (8.8) | |
| No | 43 (43) | 43/43 (100) | 0/43 (0.0) | |
| Metastasis | 0.007 | |||
| Positive | 38 (38) | 33/38 (86.8) | 5/38 (13.2) | |
| Negative | 62 (62) | 62/62 (100.0) | 0/62 (0.0) |
HPV, human papillomavirus.