Table 7.

Results of permutation tests comparing change scores between the semantic (n = 9) and logopenic (n = 9) variants of primary progressive aphasia.

		pre-treatment performance vs.				post-treatment performance vs.
		post-treatment	3-month follow-up	6-month follow-up	12-month follow-up	3-month follow-up	6-month follow-up	12-month follow-up
Trained	n	18	16	16	17	16	16	17
	t	−0.2	0.0	1.1	1.2	0.1	−0.2	1.8
	p	0.952	0.959	0.291	0.238	0.956	0.916	0.122
Untrained	n	18	16	16	17	16	16	17
	t	0.4	0.6	1.3	1.9	0.4	0.6	1.0
	p	0.773	0.636	0.179	0.088	0.787	0.603	0.378
BNT	n	16	14	13	13	14	12	12
	t	−1.1	−1.0	−1.6	0.9	−0.5	−1.2	1.0
	p	0.350	0.495	0.175	0.502	0.691	0.317	0.369
WAB	n	18	16	16	15	16	16	15
	t	−1.1	0.5	1.8	1.4	2.0	2.3	1.9
	p	0.280	0.694	0.120	0.162	0.070	0.035	0.077

Note. All comparisons utilized two-tailed tests for independent data sets. Bonferroni-corrected thresholds for significance: p < 0.013 for comparisons to pre-treatment performance and p < 0.017 for comparisons to post-treatment performance. Trained = trained items; Untrained = untrained items; BNT= Boston Naming Test; WAB = Western Aphasia Battery.