Table 3.
Mean values of seizure thresholds (ST), the number of patients with increased ST with respect to initial ST, and median change in ST values, during a course of electroconvulsive therapy, in patients treated with right unilateral (RUL) and bifrontotemporal (BL) electrode placements
| RUL placement | BL placement | P value for comparing median ST change in RUL versus BLb | |||||||
|---|---|---|---|---|---|---|---|---|---|
| n | Mean ± SD | ST increase present (%) | Median ST change versus baseline; IQR | n | Mean ± SD | ST increase present (%) | Median ST change versus baseline; IQR | ||
| Characteristic | |||||||||
| STa at initial session | 63 | 45.6 ± 16.8 | 28 | 95.4 ± 59.5 | |||||
| ST at 6th session | 49 | 53.0 ± 25.3 | 9 (18.4) | 0; 0–0 | 37 | 98.1 ± 77.9 | 11 (29.7) | 0; 0–25.2 | 0.953 |
| ST at 12th session | 22 | 52.7 ± 25.7 | 3 (13.6) | 0; 0–0 | 45 | 98.6 ± 103.0 | 24 (53.3) | 25.2; 0–50.4 | 0.019 |
| ST at 18th session | 8 | 47.3 ± 25.0 | 2 (25.0) | 0; 0–18.9 | 35 | 94.9 ± 55.2 | 22 (62.9) | 25.2; 0–75.6 | 0.055 |
| ST at 24th session | 3 | 50.4 ± 0.0 | 2 (66.7) | 25.2; 0–25.2 | 12 | 100.8 ± 52.6 | 8 (66.7) | 50.4; 0–75.6 | 0.339 |
SD Standard deviation, IQR interquartile range
aIn millicoulombs
bMann–Whitney U test