Table 2.
Depressive episodes characteristics
| N | Mean or median | SD or SE | Minimum | Maximum | |
|---|---|---|---|---|---|
| Number and exposure of depressive episodes | |||||
| Mean/SD age at first onset of any depressive episode (years) | 50 | 41.7 | 15.9 | 11.4 | 75.1 |
| Mean/SD number of depressive episodes (MDD + ODD) | 50 | 2.3 | 1.0 | 1.0 | 5.0 |
| Mean/SD exposure to all depressive disorders (months) | 50 | 71.1 | 103.7 | 0.5 | 620.5 |
| Median/SE exposure to all depressive disorders (months) | 50 | 38.1 | 16.0–82.0 | 0.5 | 620.5 |
| Mean/SD duration of all depression episodes (months) | 115 | 30.9 | 63.2 | 0.4 | 536.8 |
| Median/SE duration of all depression episodes (months) | 115 | 11.0 | 6.0–30.0 | 0.4 | 536.8 |
| Mean/SD number of MDD episodes | 50 | 1.8 | 0.8 | 1.0 | 4.0 |
| Mean/SD exposure to MDD (months) | 50 | 43.1 | 46.5 | 0.5 | 231.3 |
| Median/SE exposure to MDD (months) | 50 | 24.5 | 13.4–60.1 | 0.5 | 231.3 |
| Mean/SD MDD episode duration (months) | 92 | 23.4 | 31.9 | 0.5 | 231.3 |
| Median/SE MDD episode duration (months) | 92 | 10.6 | 7.0–28.7 | 0.5 | 231.3 |
| Mean/SD number of ODD episodes | 50 | 0.5 | 0.7 | 0.0 | 2.0 |
| Mean/SD exposure to ODD (months) | 18 | 77.8 | 151.6 | 1.0 | 608.8 |
| Median/SE exposure to ODD (months) | 18 | 13.5 | 4.0–60.7 | 1.0 | 608.8 |
| Mean/SD ODD episode duration (months) | 23 | 60.9 | 123.8 | 0.4 | 536.8 |
| Median/SE ODD episode duration (months) |
23 |
12.0 |
2.0–60.0 |
0.4 |
536.8 |
| Episode duration of MDD (onset to full remission) | |||||
| Mean/SD duration of prospective episode (months) | 2 | 2.5 | 0.1 | 2.5 | 2.6 |
| Mean/SD duration of index episode (months) | 50 | 26.3 | 38.7 | 0.5 | 231.3 |
| Mean/SD duration of earliest preindex episode (months) | 30 | 19.8 | 19.2 | 2.2 | 74.0 |
| Mean/SD duration of second earliest preindex episode (months) | 8 | 17.4 | 19.3 | 3.0 | 61.9 |
| Mean/SD duration of third earliest preindex episode (months) | 2 | 50.0 | 50.9 | 14.0 | 86.0 |