| Group A | Group B | P value |
---|---|---|---|
Number of patients (n) | 102 | 102 | Â |
 Age (years) | 73.7 ± 8.7 | 73.7 ± 8.3 | 0.97 |
 Sex, males | 84 (82.4%) | 84 (82.4%) | 1.00 |
 Alcohol drinking | 39 (39.8%) | 37 (37.7%) | 0.88 |
 Smoking | 36 (36.7%) | 33 (33.7%) | 0.77 |
 BMI (kg/m2) | 23.5 ± 3.9 | 23.2 ± 3.6 | 0.57 |
 History of colonoscopy | 91 (89.2%) | 91 (89.2%) | 1.00 |
 Using laxatives | 22 (21.6%) | 17 (16.8%) | 0.48 |
Comorbidity | |||
 Cardiovascular diseases | 32 (31.3%) | 27 (26.5%) | 0.54 |
 Cerebrovascular diseases | 22 (21.6%) | 27 (26.5%) | 0.42 |
 Chronic kidney diseases | 11 (10.8%) | 10 (9.8%) | 1.00 |
 Chronic liver damage | 4 (3.9%) | 2 (2.0%) | 0.68 |
 Diabetes mellitus | 31 (30.4%) | 35 (34.3%) | 0.65 |
 Hypertension | 79 (77.5%) | 84 (82.3%) | 0.49 |
 Malignant diseases | 26 (25.5%) | 23 (22.6%) | 0.74 |
 Charlson comorbidity score | 2.2 ± 1.3 | 2.2 ± 1.4 | 1.00 |
Operators of procedure | |||
 Trainees | 72 (70.6%) | 50 (49.0%) | 0.003 |
 Specialists | 30 (29.4%) | 52 (51.0%) |  |