Table 2 a. Univariate logistic regression analysis of factors associated with cecal intubation.
| Variable | Odds ratio | 95 % CI | Pvalue |
| Time | |||
| PM vs. AM | 0.99 | 0.69 – 1.42 | 0.963 |
| EVE vs. AM | 1.27 | 0.88 – 1.84 | 0.199 |
| EVE vs. PM | 1.28 | 0.86 – 1.90 | 0.219 |
| Age > 60 vs. < 60 y | 0.57 | 0.38 – 0.86 | 0.007 |
| Queue position1 | |||
| 2 vs. 1 | 1.15 | 0.77 – 1.70 | 0.489 |
| 3 vs. 1 | 1.30 | 0.88 – 1.92 | 0.184 |
| 4 vs. 1 | 1.42 | 0.84 – 2.41 | 0.191 |
| 3 vs. 2 | 1.13 | 0.78 – 1.64 | 0.506 |
| 4 vs. 2 | 1.24 | 0.73 – 2.10 | 0.431 |
| 4 vs. 3 | 1.09 | 0.68 – 1.74 | 0.714 |
| 4 vs. 1, 2, 3 | 1.26 | 0.79 – 2.00 | 0.331 |
| Gender: female vs. male | 0.66 | 0.46 – 0.94 | 0.023 |
| Bowel preparation | |||
| Satisfactory vs. poor | 3.63 | 2.18 – 6.03 | 0.000 |
| Good vs. poor | 4.79 | 2.90 – 7.91 | 0.000 |
| Satisfactory vs. good | 1.32 | 0.91 – 1.91 | 0.141 |
| Trainee presence | 0.73 | 0.43 – 1.23 | 0.235 |
| Experience | 1.02 | 0.67 – 1.53 | 0.934 |
CI, confidence interval; PM, afternoon; AM, morning; EVE, evening.
1
Queue variable was divided into four categories; the fourth category consisted of queues ≥ 4; age was divided into two groups for data-fitting purposes.