Table 5 –

Language scores for PPA variants and the results of the between-group statistical comparisons (right-most column)

Measures	PPA -G Mean (SD) [95% CI]	PPA-L Mean (SD) 95% CI	PPA-S Mean (SD) 95% CI	K-W χ² (df =2) p
Fluency
Avg WPM	43.71 (17.70)^a [31.04 – 56.37]	85.08 (31.11) [61.16 – 109.01]	113.83 (34.03) [82.41 – 145.26]	15.01 p = .001^*
Total Disfluencies	28.80 (22.42) [12.76 – 44.84]	33.33 (17.74) [19.69 – 46.98]	8.43 (14.40) [5.10 – 31.75]	1.95 p = .376
Word Retrieval
MATTR	.79 (.11) [.70 – .86]	.85 (.55) [.80 – .89]	.87 (.01) [.84 – .89]	4.61 p = .100
Idea Density	.34 (0.06) [.30 – .38]	.44 (.79) [.37 – .49]	.43 (.44) [.39 – .47]	11.04 p = .004
Proportion CIUs	.66 (.16) [.54 – .77]	.63 (.18) [.48 – .76]	.59 (.17) [.43 – .74]	.71 p = .699
No. Semantic Errors	.40 (.69) [−.10 – .90]	.33 (.70) [−.21 – .88]	.71 (1.11) [−.31 – 1.74]	0.75 p = .685
No. Phonological Errors	.90 (1.28) [−.02 – 1.82]	.67 (1.65) [−.61 – 1.94]	.43 (0.78) [−.30 – 1.16]	1.35 p = .507
Total Word Retrieval Errors	1.40 (1.83) [.09 – 2.71]	1.00 (1.65) [−.27 – 2.27]	1.29 (1.97) [−.54 – 3.11]	0.78 p = .670
Syntax
MLU, morphemes	6.51 (2.95)^a [4.39 – 8.62]	12.44 (2.77) [10.31 – 14.56]	11.30 (2.45) [9.02 – 13.56]	13.98 p = .001^*
Proportion grammatical utterances	.51 (.32) [.27 – .74]	.71 (.25) [.51 – .89]	.81 (.15) [.67 – .95]	4.56 p = .510
Verbs/utterance	.75 (.48)^a [.40 – 1.09]	1.80 (.43) [1.46 – 2.13]	1.82 (.46) [1.40 – 2.20]	16.48 p < .001^*
Complex Utterances	.00 (.0) -	.11 (.33) [−.15 – .37]	.14 (.37) [−.21 – .49]	1.35 p = .508
Total Morphological Errors	.40 (.69) [−.10 – .90]	.78 (1.39) [−.29 – 1.85]	.29 (.75) [−.41 – .98]	0.72 p = .695
General
Total Errors	30.60 (22.37) [14.59 – 46.61]	35.11 (18.65) [20.77 – 49.45]	20.00 (16.22) [4.99 – 35.01]	1.97 p = .372

Mean (SD) for measures in between groups comparisons. Abbreviations: K-W χ² = Kruskal-Wallis chi-square; PPA-G = agrammatic PPA; PPA-L = logopenic PPA; PPA-S = semantic PPA,

p < .003,

Post-hoc comparison with PPA-S and PPA-L groups, p < .05.