. Author manuscript; available in PMC: 2013 Jun 3.

Published in final edited form as: J Clin Psychiatry. 2008 Mar;69(3):406–411. doi: 10.4088/jcp.v69n0310

Table 2.

Acute Phase Treatment Characteristics and Outcome for Patients With and Without Atypical Depression Receiving ECT

Outcome	Atypical Depression (N = 36)	Typical Depression (N = 453)	p Value, Unadjusted	p Value, Adjusted^a
Treatment Characteristic
Seizure threshold, mean (SD)
Total sample	20 (10.6)	26.3 (15.4)	.0014^b	.3242
Remitters only	19.3 (10.0)	27.2(14.7)	.0004^c	.2009
No. of ECT treatments, mean (SD)
Total sample	6.9 (3.3)	7.2 (3.4)	.5988^b	NA
Remitters only	6.6 (3.1)	7.1 (3.0)	.4230^b	NA
Treatment Outcome
Dropout, N (%)	5 (13.9)	99 (21.9)	.2610^c	NA
Outcome, N (%)^d
Remitter	29 (80.6)	304 (67.1)	.0957^c	.0357
Nonremitter and dropout	7 (19.4)	149 (32.9)	NA	NA

p Value from logistic regression; adjustment covariables: age, psychotic status, baseline HAM-D₂₄ total score, gender, and clinical site.

p Value from independent sample t test.

p Value from χ² test.

Adjusted odds ratio; OR interpreted as odds of remitting for atypical compared to typical groups adjusted for age, psychotic status, baseline HAM-D₂₄ total score, gender, and clinical site; effect size (95% CI) = 2.6 (1.1 to 6.2).

Abbreviations: ECT = electroconvulsive therapy, HAM-D₂₄ = 24-item Hamilton Rating Scale for Depression, NA = not applicable.