Table 2 Distribution of the main characteristics by procedure (difficult vs routine).
Difficult procedure (n=142) | Routine procedure (n=475) | P value | |
|---|---|---|---|
Gender (females) | 66.2% | 47.4% | <0.0001 |
Mean age±SD | 58.8±14.6 | 61.8±12.6 | 0.03 |
Endoscopists | 0.014 | ||
less experienced | 26.8% | 15.8% | |
more experienced non-specialists | 52.1% | 61.7% | |
highly experienced specialists | 21.1% | 22.5% | |
Current diseases | |||
Allergy | 20.4 | 22.1 | 0.72 |
Heart | 16.9 | 15.2 | 0.60 |
Liver | 7.7 | 5.3 | 0.30 |
Kidney | 2.8 | 4.6 | 0.47 |
Thyroid | 5.6 | 5.7 | 1.00 |
Polypectomy | 14.8 | 16.0 | 0.79 |
Duration of colonoscopy (minutes) | |||
mean±SD | 26.9±14.2 | 22.0±10.2 | 0.0002 |
range | 5-85 | 2-65 | |
Bowel preparation | |||
adequate | 62.7% | 77.3% | <0.0001 |
with residual matter | 26.1% | 18.7% | |
inadequate | 11.2% | 4.0% | |
ASA score | 0.003 | ||
1 | 46.5% | 33.7% | |
2 | 38.7% | 54.9% | |
3+4 | 14.8% | 11.4% |