Table 2.
Adjusted estimates [odds ratio (95%CI)] of predictors of suboptimal bowel preparation
| Suboptimal bowel prep | |
| Predictors | OR (95%CI)1 |
| Age (yr) | |
| 50-59 | 1.0 |
| 60-69 | 1.1 (0.84-1.4) |
| ≥ 70 | 1.0 (0.67-1.6) |
| Male gender | 0.99 (0.77-1.3) |
| Race | |
| White | 1.0 |
| Black | 1.7 (1.2-2.4) |
| Other | 1.2 (0.80-1.8) |
| Body mass index (kg/m2) | |
| < 30 | 1.0 |
| ≥ 30 | 1.3 (0.99-1.6) |
| Clinical | |
| Narcotics use | 1.8 (1.3-2.5) |
| TCA use | 2.5 (1.4-4.6) |
| Diagnosis of diabetes | 2.3 (1.7-3.1) |
| GI fellow present | 1.1 (0.82-1.6) |
| Polyps detected | 0.85 (0.68-1.1) |
| Bowel prep type | |
| 4L PEG 3350 | 1.0 |
| 8L PEG 3350 | 0.52 (0.30-0.91) |
| MiraLAX®/Gator ade® | 0.55 (0.39-0.76) |
| Other | 0.76 (0.54-1.1) |
| Endoscopy site | |
| UMich Satellite Outpatient Units | 1.0 |
| UMich in-Hospital Outpatient Unit | 1.3 (0.94-1.8) |
| Veterans Affairs in-Hospital Unit | 1.6 (1.2-2.3) |
1
Effect adjusted for endoscopy site and GI fellow presence. TCA: Tricyclic antidepressants; GI: Gastroenterology; PEG: Polyethylene glycol; OR: Odds ratio.