Influencing factors | Variables | B value | Standard error | t value | P value | R2 value |
---|---|---|---|---|---|---|
Spinopelvic parameters | LL | 0.342 | 0.088 | 3.904 | < 0.001 | 0.129 |
SS | − 0.751 | 0.172 | − 4.362 | < 0.001 |  | |
Constant | 18.093 | 2.434 | 7.433 | < 0.001 |  | |
Concave or convex LMA at the upper or lower intervertebral level of the apical vertebra | Upper intervertebral level LMA | Â | Â | Â | Â | 0.319 |
 Convex | − 8.123 | 1.000 | 7.615 | < 0.001 | – | |
Lower intervertebral level LMA |  |  |  |  | – | |
 Concave | − 4.198 | 1.184 | − 3.545 | 0.001 | – | |
Constant | 5.941 | 2.974 | 1.997 | 0.048 | – |