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. 2020 Nov 13;15:532. doi: 10.1186/s13018-020-02075-w

Table 5.

Comparison of encroachment ratio of the injured vertebral canal

Experimental group Control group t/t' P
Encroachment ratio of the injured vertebral canal
 Preoperation 27.46 ± 8.73 28.94 ± 5.38 0.572 0.747
 3 days after operation 1.63 ± 0.59* 6.52 ± 4.56*
t = 4.921, P < 0.05 t = 4.840, P < 0.05
 Difference of the encroachment ratio of the injured vertebral canal between the preoperation and 3 days after the operation 25.46 ± 4.26 21.51 ± 1.36 3.295 0.033*

Values are mean ± SD

*Statistically significant