group

observation group

(n = 40)

control group

(n = 40)

statistic

P

GCS score before surgery

5.85 ± 1.33

5.95 ± 1.22

t = −0.350

0.727

GCS score when leaving the ICU

10.83 ± 1.78

9.85 ± 1.51

t = 2.639

0.01

statistic

t = −34.219

t = −34.794

P

0

0