Descriptive and clinical data for the three patient groups
| Early onset depression | Late onset depression | Dementia | F/χ2, P value | Post hoc | |
|---|---|---|---|---|---|
| Age (y): | |||||
| Mean | 70.4 | 73.8 | 77.9 | 6.9, 0.002 | ED<DEM |
| SD | 5.6 | 5.2 | 8.6 | ||
| Sex | |||||
| Male | 7 | 7 | 8 | 0.230, 89 | |
| Female | 15 | 11 | 14 | ||
| Education (y): | |||||
| Mean | 10.5 | 9.8 | 10.7 | 0.74, 0.48 | |
| SD | 2.6 | 1.9 | 2.5 | ||
| Premorbid IQ: | |||||
| Mean | 99 | 102 | 103 | 0.50, 0.61 | |
| SD | 15 | 13 | 12 | ||
| Handedness: | |||||
| Left | 3 | 2 | 1 | 1.3, 0.51 | |
| Right | 17 | 14 | 21 | ||
| Hachinski: | |||||
| Mean | 3.3 | 3.9 | 1 | 23.7, 0.0000 | DEM<ED, LD |
| SD | 1.6 | 1.3 | 1.1 | ||
| Hamilton depression scale (17 item): | |||||
| Mean | 22.6 | 19.1 | 5.1, 0.03 | LD<ED | |
| SD | 4 | 6 | |||
| Newcastle scale: | |||||
| Mean | 6.5 | 5.4 | 2.4, 0.13 | ||
| SD | 2.2 | 2.5 | |||
| Mini mental state examination: | |||||
| Mean | 26.8 | 26.2 | 16.8 | 38.4, 0.0000 | DEM<ED, LD |
| SD | 3 | 1.7 | 6 | ||
ED=Early depression; LD=late depression; DEM=dementia.