Table 4.
Patient’s self-reported parameters: summary statistics of pre- and postoperative values
| Parameter | Time point | N | Mean | SD | Median | Min. | IQR | Max. | |
|---|---|---|---|---|---|---|---|---|---|
| P25 | P75 | ||||||||
| VAS | Pre-op | 30 | 7.6 | 1.6 | 8.0 | 4.0 | 7.0 | 9.0 | 10.0 |
| Imm post-op | 30 | 2.8 | 1.1 | 3.0 | 1.0 | 2.0 | 3.0 | 6.0 | |
| 6 M PO | 30 | 2.1 | 1.4 | 2.0 | 0.0 | 1.0 | 3.0 | 6.5 | |
| 12 M PO | 26 | 2.7 | 2.1 | 2.0 | 0.0 | 1.0 | 3.0 | 8.0 | |
| ODI | Pre-op | 30 | 55.5 | 18.8 | 50.0 | 31.0 | 40.0 | 71.1 | 95.6 |
| 6 M PO | 30 | 22.3 | 8.4 | 22.2 | 2.0 | 17.8 | 24.4 | 53.0 | |
| 12 M PO | 26 | 26.9 | 9.5 | 25.6 | 11.1 | 20.0 | 35.6 | 42.2 | |
| SF36 PHs | Pre-op | 30 | 40.6 | 7.9 | 39.7 | 28.5 | 34.4 | 45.6 | 59.4 |
| 6 M PO | 30 | 55.6 | 6.6 | 55.5 | 35.0 | 52.2 | 60.3 | 65.9 | |
| 12 M PO | 26 | 43.8 | 6.6 | 41.9 | 30.0 | 40.0 | 48.1 | 59.1 | |
| SF36 MHs | Pre-op | 30 | 47.2 | 11.4 | 47.8 | 29.7 | 36.3 | 56.6 | 71.4 |
| 6 M PO | 30 | 41.0 | 8.4 | 40.3 | 28.1 | 35.3 | 45.6 | 65.0 | |
| 12 M PO | 26 | 38.3 | 6.7 | 36.7 | 28.4 | 35.6 | 40.3 | 54.0 | |