Table 1.

Clinical Characteristic of Relapsed vs. Nonrelapsed Depressed Patients after ECT

	Relapsed	Nonrelapsed
	n=18	n=10	P
Gender			.724
Female	12 (66.7%)	6 (60.0%)
Male	6 (33.3%)	4 (40.0%)
Age (y)	58.6 ± 12.8	61.4 ± 17.3	.549
Age at onset (y)	49.9 ± 11.5	55.4 ± 20.2	.337
Diagnosis			.569
Major depressive disorder	11 (61.1%)	5 (50.0%)
Bipolar disorder	7 (38.9%)	5 (50.0%)
HAMD score at Pre-ECT	21.7 ± 7.4	22.0 ± 8.5	.885
HAMD score at Post-ECT	4.9 ± 1.8	3.9 ± 2.0	.115
Reduction of HAMD score	16.8 ± 7.6	18.1 ± 8.6	.648
Number of ECT (sessions) IMI equivalence at Pre-ECT IMI equivalence at Post-ECT	9.8 ± 3.2 163.2 ± 109.3 153.5 ± 90.9	10.2 ± 1.8 153.8 ± 149.1 108.8 ± 150.5	.825 .869 .175

Abbreviations: ECT, electroconvulsive therapy; HAMD, Hamilton Rating Score for depression; IMI, imipramine.

Data show the mean ± SD or percent (%).

P values of the chi-square test and the Mann-Whitney U test are reported.