| Diagnosis | Levels of Depression | ||
| Stage | Impact level | Value | |
| No Signs of Depression | None | None | 0 |
| Minor Depressive Episode | Symptomatic | Slight | 1 |
| Major Depressive Episode | Syndromic | Regular | 2 |
| Premenstrual Depressive Episode | Symptomatic | Regular | 2 |
| Major Post-Partum Depressive Episode | Syndromic | Regular | 2 |
| Major Depresive Disorder | Nosologic | Moderate | 3 |
| Dystimia | Nosologic | High | 4 |
| Chronic Depression | Nosologic | Very High | 5 |