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Comparison of the timing of first rescue analgesic administration in the two groups
| Timing of rescue analgesics | Group | Frequency | Percentage | P |
|---|---|---|---|---|
| 0-3 h | A | 0 | 0 | 0.31 |
| B | 1 | 1.4 | ||
| 3-6 h | A | 9 | 12.7 | 0.13 |
| B | 16 | 22.2 | ||
| 6-12 h | A | 61 | 85.9 | 0.07 |
| B | 53 | 73.6 | ||
| 12-24 h | A | 1 | 1.4 | 0.57 |
| B | 2 | 2.8 |
