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Demographic characteristics of the final study sample.
| ε4 homozygotes | Non-ε4 carriers | |||
|---|---|---|---|---|
| n | Mean age (SD) | n | Mean age (SD) | |
| MDD | ||||
| Male | 7 | 41.86 (15.25) | 7 | 41.71 (15.13) |
| Female | 5 | 35.40 (18.12) | 5 | 35.40 (18.12) |
| Total | 12 | 39.17 (16.03) | 12 | 39.08 (15.96) |
| HC | ||||
| Male | 8 | 24.50 (2.78) | 8 | 24.50 (2.78) |
| Female | 11 | 36.64 (12.49) | 11 | 36.64 (12.49) |
| Total | 19 | 31.53 (11.30) | 19 | 31.53 (11.30) |
