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Total morphine consumption (PCA) among the groups after undergoing TKA procedure.
| Group 1 (1 hr preemptive analgesia) | Group 2 (72 hrs preemptive analgesia) | Group 3 (Placebo) | P value∗ | |
|---|---|---|---|---|
| N=10 | N=10 | N=10 | ||
| Morphine (PCA) | 10.60(2.675) | 9.90(1.524) | 30.20(5.308) | <0.001 |
The data were normally distributed.
The p value was measured using ANOVA parametric test.
