Table 2.

Descriptive Statistics for Neuropsychological Tests (Z Scores)

Variable	Mean	Median	Mode	SD	Range
WTAR	−0.89	−1.00	−1.67	1.07	−3.33–1.67
Trails A	−0.80	−0.41	−0.15	1.92	−11.59–1.84
Trails B	−2.67	−1.82	0.58	3.24	−17.62–1.81
SDMT	−1.56	−1.56	−2.93	1.18	−4.17–1.14
HVLT total	−2.29	−2.31	−2.50	1.43	−5.79–0.82
HVLT delayed	−2.50	−2.48	−2.48	1.70	−5.82–1.12
COWAT FAS	−1.34	−1.31	−2.21	0.93	−2.85–1.46
COWAT  category	−0.46	−0.91	−1.09	2.49	−4.71–8.76
Rey total	−2.76	−2.31	−0.87	2.76	−11.7–1.32
NPZ	−1.51	−1.50	−5.25	1.20	−5.25–2.33