Table 1.
Patient demographics and caustic damage parameters for all subjects and for those in the non-elderly and elderly groups
| Variables | Total (n = 389) |
Non-elderly (< 65 years) (n = 321) |
Elderly (≧65 years) (n = 68) |
P value |
|---|---|---|---|---|
| Median age (Q1-Q3) | 40 (29 - 55) | 36 (26 - 45) | 74 (68 - 77) | < 0.001* |
| Mean age (minimum-maximum) | 43.25 (17-107) | 36.72(17-64) | 74.07 (65-107) | |
| Gender (male %) | 189 (48.6) | 165 (51.4) | 24 (35.3) | 0.016* |
| Substance | 0.472 | |||
| Clean detergent | 193 (49.6) | 160 (49.8) | 33 (48.5) | 0.844 |
| HCl | 107 (27.5) | 90 (28.0) | 17 (25.0) | 0.610 |
| Other | 89 (22.9) | 71 (22.1) | 18 (26.5) | 0.438 |
| Acid/alkaline | 0.444 | |||
| Acid | 245 (63.0) | 206 (64.2) | 39 (57.4) | 0.290 |
| Alkaline | 124 (31.9) | 100 (31.2) | 24 (35.3) | 0.506 |
| Unknown | 20 (5.1) | 15 (4.7) | 5 (7.4) | 0.363 |
| Gradea | 0.002* | |||
| 1 | 57 (14.7) | 52 (16.2) | 5 (7.4) | 0.061 |
| 2a/2b | 153 (39.3) | 133 (41.4) | 20 (29.4) | 0.065 |
| 3a | 61 (15.7) | 53 (16.5) | 8 (11.8) | 0.328 |
| 3b | 104 (26.7) | 73 (22.7) | 31 (45.6) | < .001* |
| Furthest location reached by endoscopea | 0.091 | |||
| Esophagus | 8 (2.1) | 8 (2.5) | 0 (0) | - |
| Stomach | 31 (8.0) | 22 (6.9) | 9 (13.2) | 0.075 |
| Duodenum | 344 (88.4) | 287 (89.4) | 57 (83.8) | 0.191 |
| Most severe site of damage as observed by endoscopya | 0.422 | |||
| Esophagus | 82 (21.1) | 70 (21.8) | 12 (17.6) | 0.445 |
| Stomach | 267 (68.6) | 222 (69.2) | 45 (66.2) | 0.630 |
| Duodenum | 37 (9.5) | 28 (8.7) | 9 (13.2) | 0.249 |
Data other than those regarding age are expressed as n (%).
aData were missing for 14 subjects in the grade category, for 3 subjects in the site of damage category, and for 6 subjects in the depth of scope category.
*P value < 0.05.