Table 2.
Patient-reported outcomes for cohort
| PROM | PT cutoff: 20° (n=188) |
PI-LL cutoff: 11° (n=188) |
|||||
|---|---|---|---|---|---|---|---|
| Overall (n=188) | PT <20° (n=64) | PT ≥20° (n=124) | P a | PI-LL <11° (n=126) | PI-LL ≥11° (n=62) | P a | |
| ODI | |||||||
| Pre | 46.1 (17.7) | 45.3 (16.0) | 46.5 (18.6) | 0.657 | 44.5 (17.6) | 49.4 (17.8) | 0.099 |
| Post | 22.4 (20.3) | 25.1 (19.4) | 20.9 (20.7) | 0.199 | 21.6 (19.6) | 24.1 (21.8) | 0.468 |
| Delta | −23.73 (20.3) | −20.21 (18.1) | −25.62 (21.2) | 0.087 | −22.98 (19.7) | −25.33 (21.6) | 0.501 |
| Pb | - | <0.001* | <0.001* | - | <0.001* | <0.001* | − |
| PCS-12 | |||||||
| Pre | 30.9 (8.18) | 31.4 (7.80) | 30.6 (8.39) | 0.536 | 31.2 (8.39) | 30.3 (7.75) | 0.495 |
| Post | 39.7 (11.2) | 38.9 (11.0) | 40.1 (11.3) | 0.500 | 40.2 (11.4) | 38.7 (10.9) | 0.403 |
| Delta | 8.79 (11.1) | 7.48 (10.5) | 9.47 (11.3) | 0.250 | 9.00 (11.1) | 8.38 (11.2) | 0.730 |
| Pb | - | <0.001* | <0.001* | - | <0.001* | <0.001* | − |
| MCS-12 | |||||||
| Pre | 47.4 (11.2) | 46.3 (10.2) | 48.0 (11.7) | 0.324 | 47.6 (10.7) | 47.0 (12.3) | 0.735 |
| Post | 52.3 (9.90) | 51.4 (8.90) | 52.7 (10.4) | 0.381 | 51.7 (9.77) | 53.5 (10.2) | 0.263 |
| Delta | 4.84 (11.0) | 5.10 (8.70) | 4.71 (12.1) | 0.806 | 4.06 (10.7) | 6.48 (11.6) | 0.187 |
| Pb | - | <0.001* | <0.001* | - | <0.001* | <0.001* | |
| VAS back | |||||||
| Pre | 6.03 (2.92) | 6.35 (2.67) | 5.85 (3.05) | 0.294 | 5.93 (2.88) | 6.26 (3.04) | 0.535 |
| Post | 3.11 (2.97) | 3.49 (2.78) | 2.91 (3.06) | 0.239 | 3.01 (2.75) | 3.35 (3.45) | 0.556 |
| Delta | −2.91 (3.71) | −2.82 (3.36) | −2.96 (3.90) | 0.806 | −2.89 (3.40) | −2.95 (4.43) | 0.937 |
| Pb | - | <0.001* | <0.001* | - | <0.001* | <0.001* | − |
| VAS leg | |||||||
| Pre | 6.54 (2.76) | 6.70 (2.68) | 6.46 (2.81) | 0.592 | 6.49 (2.79) | 6.67 (2.72) | 0.709 |
| Post | 2.99 (3.11) | 3.37 (3.03) | 2.78 (3.16) | 0.263 | 2.93 (3.05) | 3.15 (3.31) | 0.703 |
| Delta | −3.55 (4.01) | −3.33 (3.87) | −3.67 (4.09) | 0.620 | −3.56 (3.98) | −3.53 (4.10) | 0.964 |
| Pb | - | <0.001* | <0.001* | - | <0.001* | <0.001* | − |
*Statistical significance (P<0.05), aIndependent samples t-test or Mann-Whitney U-test comparing preoperative and postoperative values, bPaired-sample t-test or Wilcoxon rank sum test comparing preoperative and postoperative values. SF - Short form, PCS-12 - Physical component of SF-12, MCS-12 - Mental component of SF-12, ODI - Oswestry Disability Index, VAS: Visual Analog Scale, VAS back - VAS back pain, VAS leg - VAS leg pain, PT - Pelvic tilt, PI-LL - Pelvic incidence-lumbar lordosis, PROM - Patient-reported outcome measures