Table 1.
Patients’ characteristics and outcome measures.
| Electrode placement | All (n = 67) | Only BL3 (n = 16) | Only RUL2 (n = 25) | Switchers (n = 26) | P-value |
|---|---|---|---|---|---|
| Mean age (±SD1), in years | 58 (±15) | 58 (±19) | 57 (±13) | 57 (±14) | 0.89 |
| Females, (%) | 41 (61%) | 11 (69%) | 17 (68%) | 13 (50%) | 0.32 |
| Baseline MADRS4-score (±SD) | 35.7 (±8.3) | 37.0 (±7.5) | 36.2 (±9.7) | 34.3 (±7.4) | 0.56 |
| End MADRS-score (±SD) | 12.8 (±9.5) | 10.3 (±9.3) | 8.5 (±7.0) | 18.6 (±9.1) | <0.001 |
| Responders, MADRS decrease ≥ 50%, (%) | 46 (66%) | 14 (88%) | 21 (84%) | 11 (42%) | 0.001 |
| Remitters, MADRS at end ≤ 10 (%) | 34 (51%) | 9 (56%) | 18 (72%) | 7 (27%) | 0.005 |
| Initial seizure threshold in milliCoulomb (±SD) | 55.3 (±34.3) | 85.0 (±53.6) | 47.4 (±19.7) | 44.6 (±16.4) | <0.001 |
| Previous ECT (%) | 21 (31%) | 12 (80%) | 5 (20%) | 4 (15.3%) | <0.001 |
| Total sessions (±SD) | 17.8 (±7.5) | 16.6 (±5.6) | 14.4 (±7.6) | 21.8 (±6.7) | <0.001 |
1
Standard deviation; 2Right unilateral electrode placement; 3bilateral electrode placement; 4Montgomery-Åsberg Depression Rating Scale.