Correlation between body mass index and dose of opioids prescribed over time (N = 62).
| Follow-Up | r | P Value |
| 6 mo preoperative | 0.27 | 0.033 |
| 3 mo preoperative | 0.16 | 0.19 |
| 3 mo postoperative | 0.19 | 0.13 |
| 6 mo postoperative | 0.25 | 0.049 |
| 9 mo postoperative | 0.19 | 0.21 |
| 12 mo postoperative | 0.06 | 0.64 |