Table 2.
The baseline characteristics of the included patients by type of medical institution.
| Variables | Total (n = 168,187) | Type of institution | p-value* | |||
|---|---|---|---|---|---|---|
| Clinic (n = 3365) | Hospital (n = 4651) | General hospital (n = 59,653) | Tertiary hospital (n = 100,518) | |||
| Age, mean ± SD | 64.5 ± 10.5 | 59.8 ± 12.2 | 62.5 ± 11.0 | 64.8 ± 10.5 | 64.5 ± 10.3 | 0.011 |
| Sex, n (%) | < 0.001 | |||||
| Male | 112,523 (66.9) | 1616 (48.0) | 2750 (59.1) | 39,549 (66.3) | 68,608 (68.3) | |
| Female | 55,664 (33.1) | 1749 (52.0) | 1901 (40.9) | 20,104 (33.7) | 31,910 (31.8) | |
| SES | < 0.001 | |||||
| Top 25% | 66,162 (39.3) | 1226 (36.4) | 1614 (34.7) | 21,666 (36.3) | 41,656 (41.4) | |
| Middle 50% | 65,321 (38.8) | 1364 (40.5) | 1870 (40.2) | 23,802 (39.9) | 38,285 (38.1) | |
| Bottom 25% | 26,704 (15.9) | 582 (17.3) | 864 (18.6) | 9843 (16.5) | 15,415 (15.3) | |
| Medical aid | 6445 (3.8) | 111 (3.3) | 219 (4.7) | 3101 (5.2) | 3,014 (3.0) | |
| Missing | 3555 (2.1) | 82 (2.4) | 84 (1.8) | 1241 (2.1) | 2,148 (2.1) | |
| Gastric disease | < 0.001 | |||||
| Cancer | 65,298 (38.8) | 68 (2.0) | 499 (10.7) | 18,491 (31.0) | 46,240 (46.0) | |
| Adenoma | 102,889 (61.2) | 3297 (98.0) | 4152 (89.3) | 41,162 (69.0) | 54,278 (54.0) | |
| Residence | < 0.001 | |||||
| Capital region | 68,542 (40.8) | 1208 (35.9) | 1982 (42.6) | 23,497 (39.4) | 41,855 (41.7) | |
| Metropolitan City | 37,670 (22.4) | 1036 (30.8) | 1172 (25.2) | 13,094 (22.0) | 22,368 (22.3) | |
| Province | 61,945 (36.8) | 1121 (33.3) | 1496 (32.2) | 23,052 (38.7) | 36,276 (36.1) | |
| Missing | 30 (0.0) | 0 (0.0) | 1 (0.0) | 10 (0.0) | 19 (0.0) | |
SD standard deviation, SES socioeconomic status.
*To consider the patients who underwent multiple procedures, the difference in the distribution of medical institution types according to demographic and clinical characteristics was tested using the generalized estimating equation.