Table 8.
Comparison of the magnitude of improvement in PROMs between the < 70-year and ≥ 70-year age cohorts at < 6 months and ≥ 6 months after surgery
| < 70 years | ≥ 70 years | p | |
|---|---|---|---|
| ΔODI | |||
| < 6 months | 16.25 ± 21.07 | 15.44 ± 16.85 | 0.779 |
| ≥ 6 months | 20.31 ± 19.09 | 16.05 ± 18.73 | 0.175 |
| ΔVAS back | |||
| < 6 months | 2.87 ± 3.01 | 2.5 ± 3.31 | 0.429 |
| ≥ 6 months | 2.98 ± 3.13 | 2.35 ± 3.05 | 0.218 |
| ΔVAS leg | |||
| < 6 months | 3.28 ± 3.94 | 2.95 ± 3.71 | 0.574 |
| ≥ 6 months | 3.26 ± 3.76 | 3.27 ± 3.36 | 0.981 |
| ΔSF-12 PCS | |||
| < 6 months | 4.68 ± 10.7 | 6.39 ± 10.33 | 0.297 |
| ≥ 6 months | 10.3 ± 13.08 | 8.5 ± 10.82 | 0.385 |
Δ represents change score (preoperative minus postoperative). PROM patient-reported outcome measure, VAS Visual Analog Scale, ODI Oswestry Disability Index, SF-12 PCS 12-Item Short Form Survey Physical Component Score