Table 4.

Secondary analysis, adjusting for APOE-4 status.

	pMCI	CH	p-value	Cohen's d
Semantic Content and Lexical Richness	Adjusted Mean(SE)	Adjusted Mean(SE)
Propositional Idea Density	.44(.01)	.46(.01)	0.028	0.58
Pronouns (proportion)	.35(.02)	.35(.02)	0.96	0.06
Verbs (proportion)	.55(.01)	.54(.01)	0.81	0.06
Semantic Units (possible range 0 -23)	12.7(.44)	14.5(.44)	0.008	0.65
Semantic Unit Idea Density	.14(.01)	.15(.01)	0.38	0.69
Unique Words (“types”)	61.1(3.3)	71.6(3.3)	0.03	0.52
Total Number of Words (“tokens”)	97.3(8.4)	116.8(8.4)	0.12	0.37
Moving Average Type-Token Ratio	.94(.004)	.95(.004)	0.091	0.43
Syntactic Complexity
Verb Index (Total verbs/utterances)	2.4(.1)	2.4(.1)	0.99	0.3
Mean Length of Utterance	11.2(.4)	11.9(.4)	0.2	0.39
Speech Fluency
Filled pauses (proportion)	.35(.06)	.43(.06)	0.33	0.22
Total Mazes (proportion)	.70(.15)	.93(.15)	0.28	0.45