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Requirement for rescue analgesia between different courses of drug administration.
| Course of administration | Number of dogs requiring rescue analgesia/category | Total number of dogs/category | Percentage of dogs requiring rescue analgesia |
|---|---|---|---|
| One-off | 130 | 492 | 26.4 |
| 72 h | 3 | 68 | 4.4 |
| Total | 133 | 560 | 23.8 |
