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Table 1 Clinical characteristics of the ITT sample (n = 40)

From: Differential response to right unilateral ECT in depressed patients: impact of comorbidity and severity of illness [ISRCTN39974945]

 

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

  1. Fisher's Exact Test is used for nominal variables and independent sample t-test or Mann-Whitney U test (for non-normal distributions) for continuous variables. a An upper limit of 104 weeks was used.