Table 2.
Demographic statistical results for the unmatched and matched samples.
| Variable | HCs US n = 1000 MS n = 100 |
bvFTD US n = 1000 MS n = 100 |
AD US n = 1000 MS n = 100 |
Statistics (all groups) | Post-hoc comparisons |
||
|---|---|---|---|---|---|---|---|
| Groups | p-value | ||||||
| Sex (F:M) | US | 477:523 | 464:536 | 561:439 | χ2 = 22.17, p < 0.05a | bvFTD-AD | 0.002b |
| HCs-bvFTD | n.sb | ||||||
| HCs-AD | 0.001b | ||||||
| MS | 48:52 | 50:50 | 53:47 | χ2 = 0.51, p = 0.77a | bvFTD-AD | n.sb | |
| HCs-bvFTD | n.sb | ||||||
| HCs-AD | n.sb | ||||||
| Age (years) | US | 72.14 (8.24) | 67.85 (6.35) | 78.12 (7.35) | F = 3.14, p = 0.03a, ηp2 = 0.09 | bvFTD-AD | 0.02c |
| HCs-bvFTD | n.sc | ||||||
| HCs-AD | 0.009c | ||||||
| MS | 73.25 (9.32) | 68.96 (11.63) | 75.51 (8.25) | F = 2.61, p = 0.07a, ηp2 = 0.06 | bvFTD-AD | n.sc | |
| HCs-bvFTD | n.sc | ||||||
| HCs-AD | n.sc | ||||||
| Years of education | US | 16.13 (4.75) | 14.96 (4.29) | 13.54 (3.89) | F = 2.44, p = 0.07a, ηp2 = 0.05 | bvFTD-AD | n.sc |
| HCs-bvFTD | n.sc | ||||||
| HCs-AD | n.sc | ||||||
| MS | 15.31 (5.35) | 14.75 (3.12) | 13.09 (4.51) | F = 3.24, p = 0.08a, ηp2 = 0.07 | bvFTD-AD | n.sc | |
| HCs-bvFTD | n.sc | ||||||
| HCs-AD | n.sc | ||||||
Results are presented as mean (SD). Demographic data was assessed through ANOVAs –except for sex, which was analyzed via Pearson's chi-squared (χ2) test. Effects sizes were calculated through partial eta squared (ηp2).
AD: Alzheimer's disease, bvFTD: behavioural variant of fronto-temporal dementia, HCs: healthy controls, MS: Matched sample, US: Unmatched sample.
a
p-values calculated via independent measures ANOVA.
b
p-values calculated via chi-squared test (χ2).
c
p-values calculated via Tukey's range test.