| Date |
| ||||
| before OP (n = 458) | after OP (n = 458) | Difference | |||
Variable | mean | s.d. | mean | s.d. | mean | s.d. |
DMAA | 20.54 | 8.25 | 6.61 | 5.95 | 13.92 | 8.65 |