Table 1 Correlation analysis between change in thoracic kyphosis and variables
Variable | Pearson correlation coefficients | Spearman correlation coefficients | ||||
|---|---|---|---|---|---|---|
Correlation coefficient | 95% CI | Statistical significance | Correlation coefficient | 95% CI | Statistical significance | |
Age | −0.025 | (−0.217, 0.178) | 0.853 | 0.017 | (−0.220, 0.269) | 0.899 |
Flexibility (%) | 0.357 | (0.171, 0.534) | 0.006 | 0.384 | (0.136, 0.578) | 0.003 |
Preoperative MT Cobb angle (°) | −0.138 | (−0.390, 0.136) | 0.304 | −0.097 | (−0.369, 0.180) | 0.475 |
Preoperative TK (T5–T12; °) | −0.408 | (−0.609, −0.186) | 0.002 | −0.445 | (−0.626, −0.214) | 0.001 |
Preoperative LL (L1–S1; °) | 0.148 | (−0.152, 0.459) | 0.272 | 0.237 | (−0.022, 0.476) | 0.076 |
Fused levels | 0.010 | (−0.207, 0.220) | 0.941 | 0.002 | (−0.254, 0.267) | 0.987 |
Screw density of concave side | 0.306 | (0.052, 0.502) | 0.021 | 0.290 | (0.016, 0.513) | 0.029 |
Screw density of convex side | 0.061 | (−0.222, 0.329) | 0.655 | 0.063 | (−0.205, 0.318) | 0.643 |
Total screw density | 0.206 | (−0.069, 0.427) | 0.123 | 0.213 | (−0.054, 0.441) | 0.112 |