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Mean +/–SD CSF and serum melatonin levels in patients with ADD and MCI and in healthy controls with values BLOQ substituted as 1.15 pg/ml
| ADD (n = 23) | MCI (n = 13) | Healthy controls (n = 5) | p | |
| CSF melatonin [pg/ml] | 4.09±2.83 | 3.46±3.45 | 3.25±1.41 | 0.578 |
| Serum melatonin [pg/ml] | 3.57±2.92 | 2.79±4.05 | 2.83±3.15 | 0.225 |
