Table 3.

Percentage of Impairment Compared to Normative Data at Baseline and 12-months for Neuropsychological Tests (N = 82)

Test	Baseline	12-month	Exact Sig.
Digits Forward	7 (8.5%)	4 (4.9%)	.508
Digits Backward	5 (6.1%)	4 (4.9%)	1.00
SOA-A	3 (3.7%)	2 (2.4%)	1.00
SOA-B	6 (7.3%)	6 (7.6%)	1.00
Verbal Interference	6 (7.3%)	1 (1.2%)	.06
Memory	13 (15.9%)	2(2.4%)	.003
Letter Fluency	15 (18.3%)	9 (11.0%)	.180
Animal Fluency	5 (6.1%)	5 (6.1%)	1.00

Note: McNemar test; Exact significance (2-tailed);

SOA-A = Switching of Attention Letters, SOA-B = Switching of Attention Letters and Numbers