Table 2.

Cognitive capacity before and after glioma surgery—a Wilcoxon signed-rank test

Cognitive variables	Preoperative	Postoperative	Paired difference ∆(postoperative-preoperative)	p value
TMT 2	0.33 (− 0.33–1.0)	0.33 (− 0.33–0.67)	0.00 (− 0.67–0.42)	0.70
TMT 4	0.33 (− 0.33–0.33)	0.00 (− 1.00 to − 0.67)	0.00 (− 0.67–0.33)	0.22
Digit span forward	− 0.40 (− 1.10–0.20)	− 1.10 (− 1.30 to − 0.40)	− 0.70 (− 0.80–0.00)	0.001
Coding	− 1.00 (− 1.67 to − 0.33)	− 1.33 (− 1.67 to − 0.67)	0.00 (− 0.67–0.00)	0.06
AVLT total trials I-V	0.10 (− 0.98–0.98)	− 0.35 (− 1.60–0.65)	− 0.60 (− 1.28 to − 0.13)	0.001
AVLT delayed recall	0.30 (− 0.60–1.30)	− 0.25 (− 1.18–1.30)	− 0.15 (− 0.70–0.30)	0.17
RCFT copy trial	− 1.70 (− 2.20 to − 1.10)	− 1.00 (− 2.20 to − 1.00)	0.00 (0.00–0.63)	0.17
RCFT delayed recall	− 0.85 (− 1.90 to − 0.20)	0.00 (− 0.83–0.90)	0.60 (0.10–1.80)	0.001
COWA (FAS version)	− 0.95 (− 1.55–0.25)	− 1.15 (− 1.83 to − 0.30)	− 0.20 (− 1.30–0.40)	0.26
BNT	− 0.40 (− 1.40–0.00)	− 0.40 (− 1.80–0.00)	0.00 (− 0.40–0.40)	0.77

The variables are described as z-scores and the table shows medians and interquartile ranges. Bold and italics indicate statistical significance