Table 3 Demographic and procedure characteristics by whether biopsy was retained.
| Biopsy retained (N = 50) | Biopsy not retained (N=55) | P value | |
| EGD, esophagogastroduodenoscopy. * statistically significant with threshold P value of 0.05 | |||
| Type of procedure | 0.031* | ||
| Colon N (%) | 18 (36%) | 32 (64%) | |
| EGD N (%) | 32 (58.2%) | 23 (41.8%) | |
| Gender | 0.174 | ||
| Female N (%) | 22 (40.7%) | 32 (59.3%) | |
| Male N (%) | 28 (54.9%) | 23 (45.1%) | |
| Procedure time (mean, median, range) | 24.9, 21, (8, 62) | 25.2, 23, (5, 93) | 0.757 |
| Fentanyl (mcg) (mean, median, range) | 33.3, 25, (0, 75) | 31.6, 25, (0, 75) | 0.868 |
| Propofol (mg) (mean, median, range) | 240.5, 210, (70, 470) | 271.4, 250, (70, 1000) | 0.28 |