Balancing metrics: including highest and lowest pain scores in the PACU and 50 hours postoperatively, average pain scores at 6, 12, 24 and 48 hours postoperatively, and antiemetic use in PACU and for 48 hours postoperatively.
| VAS pain scores | Baseline | Implementation | P value | ||
| N | Mean(±SD) | N | Mean(±SD) | ||
| Highest PACU | 5135 | 5.6 (±3.3) | 4667 | 5.4 (±3.3) | 0.042 |
| Lowest PACU | 5135 | 2.6 (±2.6) | 4667 | 2.5 (±2.5) | 0.424 |
| Last PACU | 5135 | 3.3 (±2.5) | 4667 | 3.3 (±2.5) | 0.084 |
| Highest, 50 hours postoperative | 7819 | 6.9 (±2.8) | 7387 | 6.8 (±2.8) | 0.007 |
| Lowest, 50 hours postoperative | 7819 | 1.3 (±1.9) | 7387 | 1.4 (±2) | 0.008 |
| Postoperative 6 hours | 5183 | 4.3 (±2.9) | 4736 | 4.2 (±2.9) | 0.939 |
| Postoperative 12 hours | 4923 | 4.1 (±2.8) | 4457 | 4.2 (±2.9) | 0.136 |
| Postoperative 24 hours | 4174 | 4.5 (±2.8) | 3878 | 4.4 (±2.8) | 0.105 |
| Postoperative 48 hours | 3119 | 4.3 (±2.8) | 2840 | 4.3 (±2.8) | 0.759 |
| Antiemetic use | Baseline | N (%) | Implementation | N (%) | |
| PACU | 8411 | 1360 (16.2%) | 8090 | 1255 (15.5%) | 0.240 |
| 48 hours postoperatively | 8411 | 3482 (41.4%) | 8090 | 3322 (41.1%) | 0.647 |
PACU, postanaesthesia care unit; VAS, visual analogue scale.