Table 1.
Baseline characteristics of the patients undergoing colonoscopy
| Group A (n=51) | Group B (n=51) | Group C (n=51) | p value | |
| Male | 29 (56.9%) | 29 (56.9%) | 29 (56.9%) | 1.00† |
| Age (year) | 52.4 ± 13.5 | 57.2 ± 13.2 | 56.3 ± 13.2 | 0.16* |
| BMI (kg/m2) | 24.2 ± 4.1 | 25.0 ± 4.2 | 23.7 ± 3.8 | 0.30* |
| Previous colonoscopy | 25 (49.0%) | 28 (54.9%) | 25 (49.0%) | 0.79† |
| Previous abdominal or pelvic surgery | 21 (41.2%) | 22 (43.1%) | 18 (35.3%) | 0.70† |
| Constipation | 14 (27.5%) | 11 (21.6%) | 6 (12.0%) | 0.15† |
| Inpatients | 4 (7.8%) | 2 (3.9%) | 1 (2.0%) | 0.50†† |
| Indication | 0.27† | |||
| Follow-up of polyps | 18 (35.3%) | 23 (46.0%) | 17 (33.3%) | |
| Abdominal pain | 4 (7.8%) | 3 (6.0%) | 5 (9.8%) | |
| Rectal bleeding | 9 (17.6%) | 9 (18.0%) | 6 (11.8%) | |
| Stool occult blood | 7 (13.7%) | 5 (10.0%) | 13 (25.5%) | |
| Change of bowel habit | 12 (23.5%) | 9 (18.0%) | 6 (11.8%) | |
| Anemia | 0 | 0 | 3 (5.9%) | |
| Weight loss | 1 (2.0%) | 1 (2.0%) | 1 (2.0%) | |
| Bowel cleansing | 0.17† | |||
| Sodium phosphate | 39 (76.5%) | 33 (64.7%) | 41 (80.4%) | |
| MC & B | 12 (23.5%) | 18 (35.3%) | 10 (19.6%) | |
| Anxiety | 4.1±2.7 | 3.4±2.7 | 3.4±2.5 | 0.34** |
| Antispasmodic agent use | 41 (80.4%) | 42 (82.4%) | 42 (82.4%) | 0.96† |
| Colon preparation | 0.97† | |||
| Good | 32 (62.7%) | 35 (68.6%) | 35 (68.6%) | |
| Fair | 13 (25.5%) | 11 (21.6%) | 11 (21.6%) | |
| Poor | 6 (11.8%) | 5 (9.8%) | 5 (9.8%) |
Group A, water infusion was used throughout the entire colon. Group B, water infusion was limited to the distal colon. Group C, air insufflation was used throughout the procedure. The infused water in all groups was removed predominantly during withdrawal. BMI, body mass index, MC & B, magnesium citrate & bisacody.
ANOVA test
Kruskal-Wallis test
Chi-squared test
Fisher exact test.
Colon preparation: The quality of bowel cleansing was classified by the endoscopist as: (1) good: dry colon or only clear liquid; (2) fair: minimal solid stool or slightly turbid fluid that could be suctioned; (3) poor: significant amount of solid residue; (4) inadequate: when stool residue precludes complete insertion..