Table 6.

The parameters for the discriminant regression function for the failure of the indirect decompression prediction

Component of the regression equation	Regression coefficient	Р value	Beta coefficient
Intercept	0.5591	< 0.0001	-
Postoperative square of the vertebral canal below 80 mm2	0.2777	0.0001	0.5783
Lateral recess depth below 3 mm	0.1008	0.0088	0.2671
Vertebral canal square mm2	-0.0005	0.3351	-0.1013
Right lateral recess depth, mm	0.0221	0.2670	0.1426
Left lateral recess depth, mm	-0.0037	0.8763	0.0207