Table 5 Miss rates per adenoma/polyp (number of adenomas/hyperplastic polyps missed in first colonoscopy as indicated by column head)
Miss rate | WE group | CO2 group | P value |
|---|---|---|---|
Overall AMR, n/N (%) [95% CI] | 23/122 (18.9) [12.3, 26.9] | 46/163 (28.2) [21.5, 35.8] | 0.071 |
Size category, n/N (%) [95% CI] | 0.069 | ||
≤5 mm | 18/94 (19.1) [11.8, 28.6] | 35/128 (27.3) [19.8, 35.9] | 0.202 |
6–9 mm | 4/24 (16.7) [4.7, 37.4] | 9/28 (32.1) [15.9, 52.4] | 0.336 |
≥10 mm | 1/4 (25.0) [0.6, 80.6] | 2/7 (28.6) [3.7, 71.0] | 1.000 |
Right colon AMR, n/N (%) [95% CI] | 11/63 (17.5) [9.1, 29.1] | 25/74 (33.8) [23.2, 45.7] | 0.034 |
Size category, n/N (%) [95% CI] | 0.022 | ||
≤5 mm | 9/50 (18.0) [8.6, 31.4] | 20/65 (30.8) [19.9, 43.5] | 0.134 |
6-9mm | 2/12 (16.7) [2.1, 48.4] | 4/6 (66.7) [22.3, 95.7] | 0.107 |
≥10 mm | 0/1 (0.0) [0.0, 97.5] | 1/3 (33.3) [0.8, 90.6] | 1.000 |
Right colon HPMR, n/N (%) [95% CI] | 1/25 (4.0) [0.1, 20.4] | 9/31 (29.0) [14.2, 48.0] | 0.031 |
Right colon combined AMR and HPMR, n/N (%) [95% CI] | 12/88 (13.6) [7.3, 22.6] | 34/105 (32.4) [23.6, 42.2] | 0.002 |
Proximal colon AMR, n/N (%) [95% CI] | 13/84 (15.5) [8.5, 25.0] | 34/112 (30.4) [22.0, 39.8] | 0.018 |
Size category, n (%) [95% CI] | 0.019 | ||
≤5 mm | 11/68 (16.2) [8.4, 27.1] | 27/92 (29.3) [20.3, 39.8] | 0.062 |
6–9 mm | 2/15 (13.3) [1.7, 40.5] | 5/16 (31.3) [11.0, 58.7] | 0.394 |
≥10 mm | 0/1 (0.0) [0.0, 97.5] | 2/4 (50.0) [6.8, 93.2] | 1.000 |
Proximal colon HPMR, n/N (%) [95% CI] | 7/48 (14.6) [6.1, 27.8] | 13/42 (31.0) [17.6, 47.1] | 0.078 |
Proximal colon combined AMR and HPMR, n/N (%) [95% CI] | 20/132 (15.2) [9.5, 22.4] | 47/154 (30.5) [23.4, 38.4] | 0.003 |
Distal colon AMR, n/N (%) [95% CI] | 10/38 (26.3) [13.4, 43.1] | 12/51 (23.5) [12.8, 37.5] | 0.807 |