Table 1.

Overview of demographics and group differences.

Demographics and clinical variables	Phonetic (n = 21)	Prosodic (n = 31)	p value
Age at onset	61 (43, 75)	72 (50, 82)	< .001
# Female	10 (48%)	20 (65%)	.355
Time onset to enrollment visit	3.3 (1.7, 10.9)	3.7 (1.7, 7.5)	.918
# of NRG visits	3 (1, 6)	3 (1, 8)	.503
ASRS-3
Phonetic subscore	7 (3, 15)	3 (0, 8)	< .001
Prosodic subscore	4 (0, 11)	8 (4, 12)	< .001
Other subscore	4 (2, 9)	4 (1, 10)	.777
Dysarthria
Present at enrollment	4 (19%)	8 (26%)	.816
Developed by last visit	14 (67%)	23 (74%)	.783
Disease duration when it developed	4.6 (3.3, 13.8)	5.9 (2.2, 11.0)	.888
Mutism
Developed by last visit	11 (52%)	10 (32%)	.245
Disease duration when it developed	6.2 (4.3, 12.6)	7.7 (4.1, 10.9)	.778
Current status (% of subtype group)			.815
Enrolled	4 (19%)	7 (23%)
Deceased	14 (67%)	18 (58%)
Lost to follow-up	3 (14%)	6 (19%)

Note. Times and age are given in years. Values indicate median (minimum, maximum) or n (% of subgroup). Disease duration to when dysarthria developed includes the disease duration at the first visit as a proxy for the speakers who had dysarthria at study enrollment. ASRS-3 subscores are from the first NRG visit. Participants were considered to currently be enrolled if their last visit was within the last year and they are still alive. Bold text indicates significant results at the p < .05 level. NRG = Neurodegenerative Research Group; ASRS-3 = Apraxia of Speech Rating Scale Version 3.