Table 3. Demographics of the neuroimaging subgroups.
| HC− | HC+ | P-value | |
|---|---|---|---|
| Number of participants: (N) | 30 | 15 | |
| Age: years (mean (s.d.)) | 70.4 (5.3) | 73.7 (6.3) | 0.08a |
| Gender; Males: (N (%)) | 15 (50) | 9 (60) | 0.53b |
| n(hypertension) | 11 (37) | 6 (40) | 0.52b |
| n(diabetes) | 1 (3) | 2 (13) | 0.99b |
| n(smokers) | 2 (7) | 0 (0) | 0.99b |
| APOE ε4 carrier: (N (%)) | 14 (47) | 12 (75) | 0.04b |
HC−: healthy controls with low plaque burden, HC+: healthy controls with high plaque burden. s.d.: standard deviation. No demographic was significantly different between groups. Significant results in bold type.
a
Analysis of variance (ANOVA) for the continuous age demographic variable (P<0.05 considered significant).
b
χ2 test for categorical demographic variables (gender, hypertension, diabetes, smoking status and APOE ε4 carrier status) (P<0.05 considered significant).