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Table 4 Miss rates per participants (number of participants with adenoma/hyperplastic polyp missed in first-pass examination as indicated by column head)

From: Water exchange colonoscopy decreased adenoma miss rates compared with literature data and local data with CO2 insufflation: an observational study

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
  1. Abbreviation: WE Water exchange, CI confidence interval