Postoperative physical function and pain over predetermined time periods.
| PROM | PHQ-9<5Δ ± SD (n) | PHQ-95–10Δ ± SD (n) | PHQ-9>10Δ ± SD (n) | P valuea |
| PROMIS-SF | ||||
| Preoperative | - | - | - | - |
| 6 wk | 4.9 ± 8.6 (103) | 6.9 ± 8.4 (45) | 5.5 ± 9.2 (33) | 0.425 |
| 12 wk | 7.8 ± 9.2 (63) | 8.9 ± 7.8 (33) | 10.1 ± 10.1 (16) | 0.617 |
| 6 mo | 7.8 ± 8.3 (49) | 6.5 ± 11.3 (27) | 9.0 ± 12.7 (19) | 0.703 |
| 1 y | 6.6 ± 10.4 (34) | 9.6 ± 15.8 (17) | 12.5 ± 11.9 (14) | 0.306 |
| VAS back | ||||
| Preoperative | - | - | - | - |
| 6 wk | –3.1 ± 3.0 (129) | –4.1 ± 2.5 (61) | –3.6 ± 3.1 (53) | 0.071 |
| 12 wk | –3.4 ± 3.0 (55) | –3.5 ± 3.4 (41) | –3.1 ± 2.7 (28) | 0.898 |
| 6 mo | –3.5 ± 3.2 (40) | –3.1 ± 3.5 (31) | –2.1 ± 2.4 (21) | 0.254 |
| 1 y | –2.5 ± 3.9 (17) | –3.8 ± 3.0 (16) | –2.4 ± 3.1 (12) | 0.469 |
| VAS leg | ||||
| Preoperative | - | - | - | - |
| 6 wk | –3.3 ± 3.1 (129) | –3.7 ± 3.5 (61) | –3.3 ± 3.5 (53) | 0.685 |
| 12 wk | –3.3 ± 3.1 (56) | –3.1 ± 3.3 (41) | –2.8 ± 4.0 (28) | 0.838 |
| 6 mo | –3.6 ± 3.3 (40) | –2.4 ± 2.7 (31) | –1.4 ± 3.6 (21) | 0.036 |
| 1 y | –3.2 ± 3.7 (17) | –2.2 ± 3.4 (16) | –1.8 ± 2.7 (12) | 0.507 |
Data presented as mean ± SD (n).
aP value was calculated using linear regression.
PHQ-9, Patient Health Questionnaire-9; PROMIS-PF, Patient-Reported Outcomes Measurement Information System Physical Function; VAS, visual analog scale.