Table 2.
Adenoma detection rate by colonoscopy type in pre and post reporting periods
| Quality measures | All Colonoscopies (n=17,526) | Colonoscopies before Public Reporting (July ‘09–April ‘10) (n=2,627) | Colonoscopies after Public Reporting (Nov ‘10–May ‘13) (n=14,899) |
|---|---|---|---|
| All Colonoscopies | |||
| Polyp removed during colonoscopy | 9,299 (53.1%) | 1,227 (46.7%) | 8,072 (54.2%) |
| Adenoma removed during colonoscopy | 6,084 (34.7%) | 660 (25.1%) | 5,424 (36.4%) |
| Advanced adenoma removed^ | 2,151 (12.3%) | 264 (10.0%) | 1,887 (12.7%) |
| Large adenoma removed | 1,884 (10.7%) | 226 (8.6%) | 1,658 (11.1%) |
| Villous, dysplastic changes, or carcinoma | 668 (3.8%) | 95 (3.6%) | 573 (3.8%) |
| Adenoma to polyp ratio | 0.65 | 0.54 | 0.67 |
| Limited to Screening Colonoscopies | |||
| Polyp removed during colonoscopy | 3,751 (57.2%) | 348 (49.8%) | 3,403 (58.1%) |
| Adenoma removed during colonoscopy | 2,353 (35.9%) | 165 (23.6%) | 2,188 (37.4%) |
| Advanced adenoma removed^ | 730 (11.1%) | 45 (6.4%) | 685 (11.7%) |
| Large adenoma removed | 661 (10.1%) | 42 (6.0%) | 619 (10.6%) |
| Villous, dysplastic changes, or carcinoma | 196 (3.0%) | 14 (2.0%) | 182 (3.1%) |
| Adenoma to polyp ratio | 0.63 | 0.47 | 0.64 |
| Other Quality Measures | |||
| Withdrawal time reported | 2,954 (16.9%) | 8 (0.3%) | 2,946 (19.8%) |
| ASA classification of patient reported | 11,239 (64.1%) | 1 (0%) | 11,238 (75.4%) |
| Informed consent documented | 17,525 (100%) | 2,627 (100%) | 14,898 (100%) |
| Quality of colonoscopy prep reported | 17,526 (100%) | 2,627 (100%) | 14,899 (100%) |
^
Adenoma size ≥10mm or pathology consistent with villous component or dysplastic changes