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Table 1 Demographics details and indications for colonoscopy

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

Variable Study 1 (WE group) (n = 86) Study 2 (CO2 group) (n = 86) P value
Male gender, n (%) 43 (50.0) 47 (54.7) 0.647
Age, mean (SD), years 53.4 (10.7) 52.9 (9.6) 0.747
Body weight, mean (SD), kg 66.8 (14.1) 67.7 (12.4) 0.649
Body mass index, mean (SD), kg/m2 25.2 (4.3) 24.7 (3.3) 0.478
Previous abdominal surgery, n (%) 30 (34.9) 24 (27.9) 0.412
Active smoker, n (%) 18 (20.9) 13 (15.1) 0.428
Family history of CRC in first degree relative, n (%) 3 (3.5) 7 (8.1) 0.329
Indications for colonoscopy, n (%) 0.032
 Screening 33 (38.4) 48 (55.8)
 Surveillance 53 (61.6) 38 (44.2)
  1. Abbreviation: WE Water exchange, SD standard deviation, CRC colorectal cancer