Table 1 MEDLINE search strategy

1. Quality indicator [Mesh] OR

2. Quality criterion OR

3. Quality measure^* OR

4. Performance indicator OR

5. Performance measure OR

6. Outcome measure OR

7. Outcome indicator OR

8. Audit OR

9. Outcome assessment [Mesh] OR

10. Process assessment [Mesh]

1. Analgesics, Opioid [Mesh] OR

2. Opioid^* OR

3. Stewardship [tw] OR

4. Appropriate opioid use [tw] OR

5. Opioid use

1. Colonic neoplasms [Mesh] OR

2. Colorectal neoplasms [Mesh] OR

3. Intestinal neoplasms [Mesh] OR

4. Bowel cancer OR

5. Laparoscopy [Mesh] OR

6. Digestive system surgical procedures [Mesh] OR

7. Colectomy [Mesh] OR

7. Bowel cancer surgery OR

9. Abdominal surgery