Correlation between age and dose of opioids prescribed over time (N = 62).
| Follow-Up | r | P Value |
| 6 mo preoperative | 0.08 | 0.52 |
| 3 mo preoperative | 0.05 | 0.69 |
| 3 mo postoperative | 0.03 | 0.83 |
| 6 mo postoperative | 0.01 | 0.91 |
| 9 mo postoperative | 0.15 | 0.22 |
| 12 mo postoperative | 0.07 | 0.54 |