| Whole Group mean ± SD | Group 1(n = 16) mean ± SD | Group 2 (n = 24) mean ± SD | P |
---|---|---|---|---|
Age (years) | 53.0 ± 11.0 | 57.1 ± 10.4 | 50.3 ± 10.7 | ns |
Sex (female/male) | 25/15 | 10/6 | 15/9 | ns |
Previous ECT (yes/no) | 12/28 | 6/10 | 6/18 | ns |
Unipolar/bipolar depression (yes/no) | 34/6 | 13/3 | 21/3 | ns |
Duration of current episode (wk)a | 54.3 ± 34.5 | 47.8 ± 34.3 | 58.6 ± 34.6 | ns |
Pre-ECT HDRS score | 25.3 ± 6.8 | 28.6 ± 5.4 | 23.0 ± 6.9 | 0.0093 |
Psychotic features (DSM-IV)(yes/no) | 5/35 | 3/13 | 2/22 | ns |
Pre-ECT MMSE score | 27.2 ± 2.3 | 26.0 ± 2.6 | 28.1 ± 1.6 | 0.0053 |
Number of antidepressant trials during episode | 2.2 ± 1.4 | 1.9 ± 1.2 | 2.3 ± 1.5 | ns |
Prior adequate antidepressant treatment (yes/no) | 34/6 | 14/2 | 20/4 | ns |