Table 1.
Patient characteristics.
| Control (N = 200) | Case (N = 87) | P-value | |
|---|---|---|---|
| Age at first surveillance endoscopic procedure Median (Q1, Q3) |
42.6 (29.5, 56.8) | 50.6 (35.7, 64.2) | .002a |
| Sex Female |
95 (47.5%) | 32 (36.8%) | .093b |
| IBD duration at first surveillance, y Median (Q1, Q3) |
5.1 (0.7, 15.8) | 10.7 (3.6, 23.4) | .003a |
| Years on surveillance Median (Q1, Q3) |
5.2 (1.8, 8.9) | 6.8 (3.0, 9.6) | .126a |
| Years followed pre-HD Median (Q1, Q3) |
2.7 (0.0, 6.9) | 5.0 (2.3, 7.6) | <.001a |
| Years followed in HD Median (Q1, Q3) |
6.5 (1.4, 7.4) | 3.7 (0.3, 5.7) | <.001a |
| Total number of surveillance endoscopic procedures Median (Q1, Q3) |
3.0 (2.0, 5.0) | 4.0 (3.0, 7.0) | <.001a |
| Nonconventional lesions over all follow-up | |||
| 0 | 126 (63.0%) | 31 (35.6%) | |
| 1 | 34 (17.0%) | 13 (14.9%) | |
| 2 | 16 (8.0%) | 13 (14.9%) | |
| 3 | 5 (2.5%) | 10 (11.5%) | |
| 4+ | 19 (9.5%) | 20 (23.0%) | <.001c |
| Conventional lesions over all follow-up | |||
| 0 | 153 (76.5%) | 52 (59.8%) | |
| 1 | 28 (14.0%) | 17 (19.5%) | |
| 2 | 8 (4.0%) | 9 (10.3%) | |
| 3 | 4 (2.0%) | 5 (5.7%) | |
| 4+ | 7 (3.5%) | 4 (4.6%) | .009c |
Abbreviations: HD, high-definition; IBD, inflammatory bowel disease.
aKruskal-Wallis rank sum test.
bPearson’s Chi-squared test.
cTrend test for ordinal variables.