Table 8.

Comparison of NIHSS scores between the two groups at different time points ($\overline{\text{x}}+\text{s}$, score).

Group	n	Postoperative	2 wk after operation	4 wk after operation
Experimental group	30	8.9 ± 1.42	5.63 ± 1.22a	2.53 ± 1.08a,b
Control group	30	8.93 ± 1.67	6.43 ± 1.43a	3.43 ± 1.17a,b
T value			−2.288	−3.139
P value			.026	.003
Experimental group F for different timepoints
Experimental group P for different timepoints
Control group F for different timepoints
Control group P for different timepoints

NIHSS = National Institutes of Health Stroke Scale; Compared with before the operation.

^aP < .05; Compared with 2 week after the operation.

^bP < .05.