Table 2.
ECT treatment characteristics
| Low-dose interval, n = 3455 | Medium-dose interval, n = 2430 | High-dose interval, n = 2032 | P-value | |
|---|---|---|---|---|
| Mean (s.d.) or n (%) | Mean (s.d.) or n (%) | Mean (s.d.) or n (%) | ||
| Number of sessions in series | 7.5 (3.5) | 7.8 (3.4) | 8.1 (3.3) | <0.001 |
| Charge (mC) | 401.7 (186.8) | 407.8 (186.6) | 407.7 (181.1) | 0.353 |
| Seizure duration(s) | 38.7 (16.1) | 37.1 (16) | 36.0 (33.2) | <0.001 |
| Electrode placement | 0.863 | |||
| Unilateral | 3069 (89.5%) | 2160 (89.6%) | 1800 (89.1%) | |
| Bitemporal | 279 (8.1%) | 199 (8.3%) | 178 (8.8%) | |
| Bifrontal | 82 (2.4%) | 52 (2.2%) | 43 (2.1%) |
The table shows treatment characteristics for the ECT series of each group, including the total number of sessions in the series, charge given for the last treatment in each series, seizure duration for the last treatment in the series and electrode placement. P-values were calculated using one-way ANOVA for mean and Pearson chi-square for proportions. ECT, electroconvulsive therapy; mC, millicoulomb.