| day | numeric |
| Scan day of the year | age |
| numeric | Age at baseline scan |
| mem | numeric |
| Memory performance score | depr |
| numeric | Depression (mild) status 500 days after baseline |
| gene1 | numeric |
| Gene marker 1 (HTR2A) | gene2 |
| numeric | Gene marker 2 (HTTTLPR) |
| cau | numeric |
| SERT binding, Caudate Nucleus | th |
| numeric | SERT binding, Thalamus |
| put | numeric |
| SERT binding, Putamen | mid |
| numeric | SERT binding, Midbrain |
| aci | numeric |
| 5-HT2A binding, Anterior cingulate gyrus | pci |
| numeric | 5-HT2A binding, Posterior cingulate gyrus |
| sfc | numeric |
| 5-HT2A binding, Superior frontal cortex | par |
| numeric | 5-HT2A binding, Parietal cortex |