Outpatient Endoscopy Quality Indicators
These indicators are from WWMG’s Outpatient Endoscopy Center at Providence Regional Medical Center—Mill Creek. We also perform procedures at Providence Regional Medical Center—Everett and Island Hospital—Anacortes.
Screening Colonoscopy | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
| Number Performed | 4882 | 5125 | 3764 | 5038 | 5067 | 5324 | 6198 |
| Average Per Physician | 610 | 640 | 470 | 630 | 704 | 887 | 1033 |
| Rate of Reaching Cecum | 99.8% | 99.6% | 99.6% | 99.9% | 99.9% | 99.9% | 99.7% |
| Average Withdrawal Time no manuevers in minutes | 8.09 | 8.45 | 8.57 | 8.65 | 8.25 | 8.60 | 10.3 |
| Adenoma Detection Rate (ADR) | |||||||
| Male (standard 25%) | 56.2% | 59.7% | 61.2% | 59.4% | 60.4% | 56.4% | 49.7% |
| Female (standard 15%) | 41.1% | 46.4% | 43.0% | 42.2% | 53.1% | 43.9% | 38.7% |
Standards:
- Rate of reaching cecum: Indicates a complete examination of the colon and a higher number is better. National benchmark: 95%
- Average Withdrawal Time: This is the average time taken to slowly withdraw the scope through the colon while looking for polyps. A number greater than 6 minutes is felt to signify a more complete examination. National benchmark: over 6 minutes.
- ADR: Adenomatous polyps are the pre-cancerous polyps, and their removal lowers the risk for colon cancer in that person. A higher number is better, with benchmarks differing for women (15% of exams) and men (25% of exams).
Safety & Patient Satisfaction | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | |
| Patient satisfaction – no discomfort | ||||||||
| Colonoscopy | 92.0% | 90.3% | 97.6% | 97.5% | 97.8% | 97.4% | 98.2% | |
| EGD (Upper Endoscopy) | 95.9% | 93.9% | 97.8% | 97.8% | 98.0% | 94.3% | 98.2% | |
| Complication Rates (per thousand) | ||||||||
| Colonoscopy: | ||||||||
| Bleeding | 0.4 | 0.3 | 0.5 | 0.3 | 0.4 | 0.6 | 0.5 | |
| Perforation | 0.2 | 0.3 | 0.1 | 0.0 | 0.2 | 0.1 | 0.2 | |
What’s Normal:
- A higher number of colonoscopies per doctor is better. Our physicians surpass the minimum recommendations of 200 per doctor.
- We ask every patient to fill out a satisfaction survey after their colonoscopy and EGD.
- Complication rates are per thousand procedures performed. Our rates are lower than the national benchmark which is 10/1000 for bleeding after removal of a polyp and 1/1000 for perforation, showing that our physicians are very safe.