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Can we predict who is likely to have an inadequate bowel prep during colonoscopy?
Multiple studies have examined the predictors of inadequate bowel preparation. These predictors or risk factors can be classified as medical factors and non-medical factors; patient-related and non-patient related; modifiable and non-modifiable. The table shows the predictors classified as medical factors and non-medical factors.
Predictors of Inadequate Bowel Preparation
| Medical Factors | Non-Medical Conditions |
|---|---|
| Prior inadequate bowel prep | Age > 60 years |
| Chronic constipation | Male gender |
| Use of constipating medications like psychotropics, opioid narcotics | Single or widowed status |
| Diabetes Mellitus | English as a 2nd language |
| Obesity | Lower household income |
| Prior resection of the colon | Low patient activation prior to colonoscopy |
| Stroke | Low health literacy |
| Dementia | Longer wait times for colonoscopy |
| Cirrhosis | Medicaid insurance |
| Parkinson disease | In-patient status |
| ≥8 active prescription medications | Afternoon colonoscopies |
| Prior abdominal surgeries like appendectomy, hysterectomy | Lower educational level, ≤ 12th grade education |
