Table 1.
Demographics details and indications for colonoscopy
| 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) | |
Abbreviation: WE Water exchange, SD standard deviation, CRC colorectal cancer