Table 3.

The absolute mean differences in POS tag counts and two-sided Welch’s t-test p-values obtained from TNL and Pitt transcripts, where bold indicates differences with p-values above the alpha threshold of 0.01. NOUN, ADJ, ADV, VERB, DET, IN, PRON, and PROPN represent noun, adjective, adverb, verb, determiner, preposition, pronoun, and proper noun, respectively.

Subset	NOUN	ADJ	ADV	VERB	DET	CONJ	IN	PRON	PROPN
	Mean difference (p-value)
Dementia vs. younger	0.16 (0)	0.04 (0.02)	0.13 (0)	0.23 (0)	0.21 (0)	0.32 (0)	0.16 (0)	0.02 (0.01)	0.03 (0.46)
Control vs. younger	0.16 (0)	0.03 (0.12)	0.22 (0)	0.48 (0)	0.42 (0)	0.34 (0)	0.37 (0)	0.01 (0.11)	0.12 (0)
Dementia vs. older	0.1 (0.02)	0.07 (0)	0.3 (0)	(0.91)	0.33 (0)	0.31 (0)	0.09 (0)	0.04 (0)	0.22 (0)
Control vs. older	0.51 (0)	(0.78)	0.39 (0)	0.25 (0)	0.53 (0)	0.33 (0)	0.29 (0)	0.03 (0)	0.31 (0)
Dementia vs. control	0.41 (0)	0.07 (0)	0.09 (0)	0.25 (0)	0.21 (0)	0.01 (0.66)	0.2 (0)	0.01 (0)	0.09 (0.01)
Younger vs. older	0.05 (0.13)	0.03 (0.11)	0.17 (0)	0.23 (0)	0.11 (0)	0.01 (0.68)	0.07 (0)	0.02 (0)	0.20 (0)