| Group 1 n = 20 | Group 2 n = 20 | Group 3 n = 20 | Group 4 n = 20 | p value |
---|---|---|---|---|---|
Pain levels | Â | Â | Â | Â | Â |
 Post-op day 1 | 5.4 ± 1.2 | 4.15 ± 1.0 | 4.25 ± 1.0 | 3.3 ± 1.0 | <0.0001 |
 Post-op day 3 | 3.75 ± 1.5 | 2.8 ± 1.0 | 2.85 ± 1.1 | 2.2 ± 0.61 | <0.0001 |
 Post-op day 7 | 2 ± 2.07 | 1.1 ± 1.51 | 1.3 ± 1.55 | 0.7 ± 0.57 | 0.064 |
 p value | < 0.0001 | < 0.0001 | < 0.0001 | < 0.0001 |  |
The difference in pain level | Â | Â | Â | Â | Â |
 Post-op day 3 to Post-op day 1 | 1.65 ± 1.27 | 1.35 ± 1.04 | 1.40 ± 1.14 | 1.15 ± 0.93 | 0.636 |
 pvalue | < 0.0001 | < 0.0001 | < 0.0001 | < 0.0001 |  |
 Post-op day 7 to Post-op day 1 | 3.40 ± 2.5 | 3.05 ± 1.82 | 2.95 ± 1.90 | 2.65 ± 1.03 | 0.703 |
 pvalue | < 0.0001 | < 0.0001 | < 0.0001 | < 0.0001 |  |
 Post-op day 7 to Post-op day 3 | 1.75 ± 2.5 | 1.70 ± 1.78 | 1.55 ± 1.32 | 1.5 ± 0.69 | 0.962 |
 pvalue | < 0.0001 | < 0.0001 | < 0.0001 | < 0.0001 |  |