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. Author manuscript; available in PMC: 2019 Mar 1.
Published in final edited form as: Cortex. 2017 Sep 8;100:127–139. doi: 10.1016/j.cortex.2017.08.030

Table 1. Demographic data for all participants.

Control (n = 36) ALS (n = 28) PD (n = 21) ANOVA
M SD M SD M SD F p
Age (years) 68.19 7.92 64.18 10.33 71.70 6.72 4.61* .013
Disease duration (months) – – 44.14 25.38 90.26 57.86 13.95* .001
Education (years) 15.89 2.52 15.96 3.02 16.52 2.62 .40 >.1
MMSE (30) 29.16 1.04 28.60 1.67 29.05 1.15 1.24 >.1
Composite semantic z-score – – .18 .76 −.33 1.02 2.53 >.1
Composite executive z-score – – −.01 .94 .00 .84 .004 >.1
Composite fluency z-score .19 .72 − .25 1.10 2.15 >.1

Mean (M) and standard deviations (SD) listed for healthy controls, ALS, and PD. Results of one-way ANOVA across all groups are listed: F-scores are listed in bold with asterisks for tests that reached significance (p < .05).