Table 1.
Baseline demographics and indications for procedures
| EGD first with CO2 (Group A1) (n=47) |
EGD first with air (Group A2) (n=48) |
Colon first with CO2 (Group B1) (n=44) |
Colon first with air (Group B2) (n=48) |
P value | ||
|---|---|---|---|---|---|---|
| Mean Age (years) | 61.7 | 61.2 | 62.3 | 59.5 | 0.72 | |
| Female (% of group) | 49 | 63 | 55 | 61 | 0.54 | |
| Mean BMI | 29.1 | 29.3 | 30.9 | 30.1 | 0.57 | |
| Indication for colonoscopy (n) |
Anemia | 27 | 35 | 28 | 28 | 0.14 |
| Screening/Surveillance | 14 | 10 | 14 | 16 | ||
| Change in bowel habit | 6 | 0 | 2 | 3 | ||
| Rectal bleeding | 0 | 0 | 0 | 1 | ||
| Abdominal pain | 0 | 2 | 0 | 0 | ||
| Inflammatory Bowel Disease | 0 | 1 | 0 | 0 | ||
| Indication for Esophagogastroscopy (n) | Anemia/GI bleeding | 27 | 32 | 30 | 28 | 0.59 |
| Dysphagia | 4 | 3 | 0 | 1 | ||
| Dyspepsia | 5 | 4 | 3 | 8 | ||
| GERD/Barrett’s | 5 | 4 | 3 | 5 | ||
| Portal hypertension | 3 | 3 | 2 | 3 | ||
| Other | 3 | 1 | 6 | 3 | ||
| Prior bidirectional endoscopy?- Yes (n) | 5 | 12 | 8 | 12 | 0.24 | |
| Regular opioid use (n) | 4 | 3 | 3 | 8 | 0.26 | |
| Prior diagnosis of depression | 15 | 11 | 8 | 11 | 0.33 | |