TABLE 2.

Patient Characteristics for the Intent-to-Treat Sample and the Treatment Groups in a Study of Continuation ECT in Geriatric Depression^a

Characteristic	Total Sample (N=120)		ECT Plus Medication (N=61)		Medication Only (N=59)
	Mean	SD	Mean	SD	Mean	SD
Age (years)	70.5	7.2	70.8	7.2	70.3	7.3
Education (years)	14.5	3.3	14.4	3.3	14.5	3.4
Hamilton Depression Rating Scale (24 item)
Baseline, phase 1	30.3	7.4	29.6	6.8	31.1	7.9
Baseline, phase 2	6.1	2.5	6.0	2.5	6.1	2.5
Mini-Mental State Examination
Baseline, phase 1	27.5	2.2	27.6	2.2	27.4	2.3
Baseline, phase 2	27.9	2.4	27.9	2.5	27.8	2.4
Clinical Global Impressions severity scale
Baseline, phase 1	5.2b	0.9	5.1b	0.8	5.3	0.9
Baseline, phase 2	1.9	0.9	1.9	0.9	1.8	0.8
Seizure threshold (mC) (baseline, phase 1)	29.8b	12.8	29.4b	12.7	30.1	13.0
Prior antidepressants (baseline, phase 1)	2.3c	1.5	2.3d	1.6	2.4e	1.5
	N	%	N	%	N	%
Female	74	61.7	37	60.7	37	62.7
White	114	95	58	95.1	56	94.9
Psychosis (at baseline)	17	14.2	5	8.2	12	20.3
Age group (years)
60–69	57	47.5	29	47.5	28	47.5
70–79	49	40.8	24	39.3	25	42.4
80–89	14	11.7	8	13.1	6	10.2

^aNo significant difference between groups on any variable; baseline psychosis approached significance, at p=0.06.

^bMissing data for one subject.

^cMissing data for 15 subjects.

^dMissing data for 10 subjects.

^eMissing data for five subjects.