Table 4.
Miss rates per participants (number of participants with adenoma/hyperplastic polyp missed in first-pass examination as indicated by column head)
| Miss rate | WE group (n = 86) | CO2 group (n = 86) | P value |
|---|---|---|---|
| Any adenoma, n (%) [95% CI] | 19 (22.1) [13.9, 32.3] | 27 (31.4) [21.8, 42.3] | 0.228 |
| Diminutive (≤5 mm) adenoma, n (%) [95% CI] | 15 (17.4) [10.1, 27.1] | 25 (29.1) [19.8, 39.9] | 0.104 |
| Right colon adenoma, n (%) [95% CI] | 10 (11.6) [5.7, 20.4] | 19 (22.1) [13.9, 32.3] | 0.102 |
| Proximal colon adenoma, n (%) [95% CI] | 12 (14.0) [7.4, 23.1] | 24 (27.9) [18.8, 38.6] | 0.038 |
| Distal colon adenoma, n (%) [95% CI] | 9 (10.5) [4.9, 18.9] | 9 (10.5) [4.9, 18.9] | 1.000 |
| Right colon hyperplastic polyp, n (%) [95% CI] | 1 (1.2) [0.03, 6.3] | 7 (8.1) [3.3, 16.1] | 0.064 |
| Proximal colon hyperplastic polyp, n (%) [95% CI] | 6 (7.0) [2.6, 14.6] | 11 (12.8) [6.6, 21.7] | 0.307 |
| Right colon combined adenoma and hyperplastic polyp, n (%) [95% CI] | 10 (11.6) [5.7, 20.4] | 24 (27.9) [18.8, 38.6] | 0.012 |
| Proximal colon combined adenoma and hyperplastic polyp, n (%) [95% CI] | 16 (18.6) [11.0, 28.5] | 33 (38.4) [28.1, 49.5] | 0.007 |
Abbreviation: WE Water exchange, CI confidence interval