Incidence and number of new occurrences in different seasons among various subgroups (gender and age groups) by different PUD types
| GU | DU | Others | ||||||||||
| Spring | Summer | Fall | Winter | Spring | Summer | Fall | Winter | Spring | Summer | Fall | Winter | |
| Gender | ||||||||||||
| Male | 1105 (24.8) | 1108 (24.87) | 1072 (24.06) | 1170 (26.26) | 877 (27.03) | 753 (23.2) | 729 (22.47) | 886 (27.3) | 164 (23.7) | 174 (25.14) | 158 (22.83) | 196 (28.32) |
| Female | 717 (25.15) | 706 (24.76) | 678 (23.78) | 750 (26.31) | 379 (25.69) | 337 (22.85) | 349 (23.66) | 410 (27.8) | 75 (24.67) | 65 (21.38) | 86 (28.29) | 78 (25.66) |
| Age | ||||||||||||
| <65 | 691 (24.47) | 709 (25.11) | 700 (24.79) | 724 (25.64) | 546 (27.06) | 491 (24.33) | 441 (21.85) | 540 (26.76) | 105 (24.36) | 99 (22.97) | 109 (25.29) | 118 (27.38) |
| ≥65 | 1131 (25.23) | 1105 (24.65) | 1050 (23.43) | 1196 (26.68) | 710 (26.28) | 599 (22.17) | 637 (23.58) | 756 (27.98) | 134 (23.72) | 140 (24.78) | 135 (23.89) | 156 (27.61) |
| Area | ||||||||||||
| North | 684 (24.64) | 690 (24.86) | 639 (23.02) | 763 (27.49) | 483 (26.98) | 388 (21.68) | 420 (23.46) | 499 (27.88) | 102 (26.36) | 97 (25.06) | 100 (25.84) | 88 (22.74) |
| Central | 449 (25.31) | 441 (24.86) | 442 (24.92) | 442 (24.92) | 322 (26.29) | 283 (23.1) | 294(24) | 326 (26.61) | 54 (22.04) | 67 (27.35) | 56 (22.86) | 68 (27.76) |
| South | 609 (24.93) | 603 (24.68) | 606 (24.81) | 625 (25.58) | 405 (26.15) | 386 (24.92) | 329 (21.24) | 429 (27.7) | 72 (24.08) | 66 (22.07) | 75 (25.08) | 86 (28.76) |
| East | 70 (25.45) | 72 (26.18) | 53 (19.27) | 80 (29.09) | 41 (28.87) | 28 (19.72) | 33 (23.24) | 40 (28.17) | 10 (18.18) | 7 (12.73) | 13 (23.64) | 25 (45.45) |
| Others | 10 (26.32) | 8 (21.05) | 10 (26.32) | 10 (26.32) | 5 (35.71) | 5 (35.71) | 2 (14.29) | 2 (14.29) | 1 (10.00) | 2 (20.00) | 0 (0.00) | 7 (70.00) |
DU, duodenal ulcer; GU, gastric ulce; PUD, peptic ulcer disease.