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Table 1 Demographics and initial linguistic assessment

From: Progression of logopenic variant primary progressive aphasia to apraxia and semantic memory deficits

  Case 1 Case 2 Case 3
Age at onset, years/gender 56/F 53/M 51/M
Education (years) 16 12 12
Years of follow-up 9 7 10
Clinical Dementia Rating total (0–3) for the first 2 years 0.5 0.5 0.5
Forward digit span 3 2 3
Backward digit span None None 2
Non-word repetition Word-length effect Word-length effect None
Apraxia of speech Not found Not found Not found
Dysarthria Not found Not found Not found
Phonological paraphasias Occasional Frequent Frequent
Confrontation naming in SLTA, % correct 65 40 35
Word repetition in SLTA, % correct 100 80 (due to paraphasia) 80 (due to paraphasia)
Sentence repetition in SLTA, % correct 20 20 0
Auditory single-word comprehension in SLTA, % correct 100 100 100
Auditory complex sentence comprehension commands in SLTA, % correct 30 0 20
  1. SLTA: Standard Language Test of Aphasia.