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Proportion of participants requiring high-dose morphine and oxycodone on day 0 (n = 139).
| Variable | High-dose | Low-dose | P-value |
|---|---|---|---|
| Morphine (GG) no. (%) | 14 (48.3) | 15 (51.7) | P = .029 |
| Oxycodone (GG) no. (%) | 6 (20.0) | 24 (80.0) | |
| Morphine (Non-GG) no. (%) | 17 (41.5) | 24 (58.5) | P = .098 |
| Oxycodone (Non-GG) no. (%) | 9 (23.1) | 30 (76.9) |
