Table 2 Pre- and postoperative spinopelvic parameters
| Â | Prediction model analysis group | External validation group | P value |
|---|---|---|---|
PI (°) | 49 (43–57) | 50 (42–59) | 0.877 |
Pre-operative | |||
 SS-standing (°) | 36 (29–43) | 36 (29–44) | 0.942 |
 LL-standing (°) | 38 (27–49) | 40 (28–50) | 0.755 |
 TK-standing (°) | 25 (17–34) | 28 (20–35) | 0.262 |
 SS-sitting (°) | 14 (4–14) | 16 (8–24) | 0.069 |
 LL-sitting (°) | 17 (2–28) | 16 (5–27) | 0.921 |
 TK-sitting (°) | 27 (18–35) | 26 (20–36) | 0.801 |
Post-operative | |||
 SS-standing (°) | 34 (26–42) | 36 (28–41) | 0.594 |
 LL-standing (°) | 38 (28–49) | 41 (27–51.5) | 0.679 |
 TK-standing (°) | 26 (17–34) | 30 (21–37) | 0.124 |
 SS-sitting (°) | 19 (8–26) | 21 (13–28) | 0.061 |
 LL-sitting (°) | 18 (5–32) | 22 (9–31) | 0.402 |
 TK-sitting (°) | 26 (17–32) | 27 (21–36) | 0.261 |