Table 3.

Baseline, Observed and Predicted One-Week cognitive scores, standardized z scores, and p values for difference from expectation (z = 0) based on the normal distribution of z scores in intact participants

	Observed Baseline	Observed One-Week	Predicted One-Week	z score	p value
Hopkins Verbal Learning Test – Revised
Total Recall	27.53 (4.5)	30.64 (4.6)	30.93 (3.5)	−0.08 (0.9)	0.38
Delayed Recall	9.80 (1.9)	10.67 (1.6)	10.84 (1.0)	−0.09 (0.6)	0.14
Brief Visuospatial Memory Test – Revised
Total Recall	21.47 (6.1)	29.37 (4.5)	30.52 (6.3)	−0.22 (0.8)	0.006
Delayed Recall	8.90 (2.1)	10.27 (1.4)	10.29 (1.7)	−0.01 (0.8)	0.91
Symbol Digit Modality Test	44.49 (8.0)	47.33 (9.4)	47.41 (7.4)	−0.02 (1.0)	0.87
Trail Making Test
Part A	36.48 (13.7)	35.17 (20.2)	32.42 (10.6)	0.28 (1.8)	0.12
Part B	85.88 (39.5)	76.12 (31.6)	77.74 (26.6)	−0.05 (0.7)	0.46

Note: p value = significance of one-sample t tests examining whether z scores differed from expectation (z = 0) based on the normal distribution of z scores.