Table 1 Demographic and clinical characteristics and n-back task performance of depressed patients and control subjects.

From: Beta oscillations in major depression – signalling a new cortical circuit for central executive function

 

Depressed patients (n = 33)

Control subjects (n = 32)

Age (years)

32.8 (8.9)

29.5 (6.2)

Education (years)

15.9 (2.6)

16.8 (1.8)

Sex ratio

14 F/9 M

11 F/11 M

HDRS-17

23.0 (4.3)

2.3 (1.7)

HARS

11.8 (4.9)

4.6 (1.5)

0-back

 Accuracy (%)

97.5 (3.3)

98.6 (1.4)

 Reaction times (ms)

529.1 (87.8)

544.5 (73.4)

2-back

 Accuracy (%)

78.2 (14.6)

83.3 (9.7)

 Reaction times (ms)

833.5 (184.6)

809.8 (176.1)

  1. The severity of depression and anxiety was quantified by using HDRS-17 and HARS. HDRS-17 = Hamilton Depression Rating Scale (17 items); HARS = Hamilton Anxiety Rating Scale. There were no significant differences in age (t63 = 1.730; P = 0.095) or education level (t63 = 1.618; P = 0.116) across groups, and all groups had equivalent gender distribution.
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