TABLE 1.
Demography and cognition of subjects in the T1 and rs‐fMRI datasets.
| HC (LA/US) | AD (LA/US) | FTLD (LA/US) | |
|---|---|---|---|
| T1 | |||
| Sample size | 318/307 | 193/192 | 208/194 |
| Age (mean years) | 64.6/69.5 a | 72.2/67.2 a | 65.8/63.7 a |
| Sex (no. female) | 205/175 a | 129/106 | 102/78 |
| Education (mean years of education attainment) | 15.1/17.2 a | 10.5/16.3 a | 12.9/16.3 a |
| Cognition (mean MMSE) | 28.6/28.1 | 18.7/17.8 | 22.3/22.5 |
| rs‐fMRI | |||
| Sample size | 240/332 | 168/152 | 177/194 |
| Age (mean years) | 67.5/62.8 a | 72.4/67.9 a | 66.2/63.7 a |
| Sex (number of females) | 159/184 a | 114/75 a | 87/77 |
| Education (mean years of education attainment) | 15.4/16.9 a | 10.9/16.3 a | 12.7/16.2 a |
| Cognition (mean MMSE) | 28.7/27.9 | 20.4/19.9 | 22.3/22.6 |
Note: Kruskal–Wallis test was used to compare continuous variables, as the data were non‐normally distributed (Shapiro–Wilk test p < 0.001). The Χ 2 test for equality of proportions with continuity correction was used to compare sex variables. All p‐values were adjusted using Bonferroni correction and set to p < 0.05.
Abbreviations: AD, Alzheimer's disease; FTLD, frontotemporal lobar degeneration; HCs, healthy controls; LA, Latin American; MMSE, Mini‐Mental State Exam; US, United States.
a
Significant differences in the comparison between geographical regions (LA vs. US).