Table 1.
Baseline characteristics of patients in the Helicobacter pylori tested group n (%)
| H. pylori | H. pylori | H. pylori | P value | |
| negative group | persistent group | eradicated group | ||
| (n = 95) | (n = 42) | (n = 120) | ||
| Sex | ||||
| Male | 74 (77.9) | 29 (69.0) | 86 (71.7) | 0.454 |
| Female | 21 (22.1) | 13 (31.0) | 34 (28.3) | |
| Age, mean (SD) | 68.65 (8.86) | 67.31 (9.12) | 64.76 (10.10) | 0.011 |
| Follow-up period (mo), mean (SD) | 36.18 (± 26.74) | 33.29 (± 25.93) | 32.78 (± 23.72) | 0.149 |
| Endoscopic mucosal atrophy | 50 (52.6) | 8 (19.0) | 25 (20.8) | < 0.001 |
| Intestinal metaplasia | 63 (66.3) | 18 (42.9) | 32 (26.7) | < 0.001 |
| Location of primary cancer | ||||
| Upper | 10 (10.5) | 5 (11.9) | 10 (8.3) | 0.577 |
| Middle | 36 (37.9) | 14 (33.3) | 35 (29.2) | |
| Lower | 49 (51.6) | 23 (54.8) | 75 (62.5) | |
| Macroscopic type of primary cancer | ||||
| Elevated | 40 (42.1) | 122 (8.6) | 57 (47.5) | 0.177 |
| Flat | 13 (13.7) | 5 (11.9) | 9 (7.5) | |
| Depressed | 42 (37.0) | 25 (59.5) | 54 (45.0) | |
| Diameter of primary cancer (cm), mean (SD) | 14.24 (7.31) | 13.83 (6.22) | 13.67 (6.90) | 0.978 |
| Histology of primary cancer | ||||
| Differentiated | 93 (97.9) | 38 (90.5) | 118 (98.3) | 0.032 |
| Undifferentiated | 2 (2.1) | 4 (9.5) | 2 (1.7) | |
| ESD criteria | ||||
| Absolute | 73 (76.8) | 33 (78.6) | 95 (79.2) | 0.636 |
| Expended | 18 (18.9) | 5 (11.9) | 19 (15.8) | |
| Beyond expanded | 4 (4.2) | 4 (9.5) | 6 (5.0) | |
| Depth of primary cancer | ||||
| Mucosa | 89 (93.7) | 40 (95.2) | 111 (92.5) | 0.819 |
| Submucosa | 6 (6.3) | 2 (4.8) | 9 (7.5) | |
| Metachronous cancer recurrence | 7 (7.4) | 1 (2.4) | 3 (2.5) | 0.173 |
ESD: Endoscopic submucosal dissection; H. pylori: Helicobacter pylori.