Characteristics of the study groups
| Controls (n = 30) | Alzheimer's disease patients | p Value | |||||
|---|---|---|---|---|---|---|---|
| −/− (n = 14) | ε4/− (n = 9) | ε4/4 (n = 5) | |||||
| Mean (SD) years of age at observation | 69 (8) | 69 (11) | 77 (6) | 74 (4) | NS | ||
| [range] | [53–86] | [53–84] | [67–86] | [67–78] | |||
| No (%) of women | 20 (67) | 9 (64) | 8 (89) | 5 (100) | NS | ||
| Mean (SD) years of education | 8 (3) | 8 (4) | 7 (5) | 5 (2) | NS | ||
| [range] | [5–19] | [3–18] | [2–17] | [2–8] | |||
| Mean (SD) mini mental state examination | 29 (1) | 20 (4) | 21 (4) | 19 (5) | <0.00005 | ||
| [range] | [25–30] | [12–27] | [15–27] | [13–25] | |||
p =Significance on one way ANOVA or χ2 test.