Table 3.

Percentage of individuals within the PPA subgroups and the PPAOS group who scored more than 1.5 SDs below published normative data means for letter (M = 12.87, SD = 3.99), category (M = 18.05, SD = 4.81), and verb/action (M = 14.35, SD = 4.06).

PPA/PPAOS groups	Word fluency tests
	Letter	Category	Verb/action
lvPPA (N = 57)	67%	65%	51%
svPPA (N = 15)	53%	60%	27%
nfPPA (N = 34)	62%	41%	59%
PPAOS (N = 30)	40%	23%	10%
All groups (N = 136)	58%	49%	41%

Note. Normative data means for letter and animal fluency in normal subjects based on Gladsjo et al. (1999), data for age 50 years + and education 12–15 years. Normative data means for action fluency in normal subjects based on Piatt et al. (2004), data for age 50 years + and education 12–15 years. PPAOS = primary progressive apraxia of speech; lvPPA = logopenic variant primary progressive aphasia; svPPA = semantic variant primary progressive aphasia; nfPPA = nonfluent/agrammatic with or without apraxia of speech.