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Table 1 Demographic and clinical data of participants

From: Functional anomalies in healthy individuals with a first degree family history of major depressive disorder

  FHN
(n = 14)
FHP
(n = 10)
MDD
(n = 14)
   
        Χ2 df P
Gender (female/male) 4/10 6/4   9/5   4.1 2/36 0.12
Handedness (right/left/ambidextrous) 14/0/0 8/2/0   12/1/1   5 4/34 0.3
  Mean SD Mean SD Mean SD F df P
Age (years) 35 9.4 33 10 41.2 10.3 2.2 2/36 ns
Weight (kg) 74 18 63.3 5 73.6 13 1.9 2/36 ns
Illness duration (years) - - - - 16 10 - - -
HDRS score 0.7 0.9 4.8 5.3 24.8 5 125 2/36 < 0.001a
Age of onset - - - - 25 11 - - -
  Median MR Median MR Median MR 4.7 df P
Alcohol intake per week (g) 16 16 60 26 28 18 4.6 2/36 ns
Cigarettes per day 0 15 1 23.5 0 21 5.7 2/36 ns
  1. aThere was a difference between the MDD patients and either the FHN (P < 0.001) or the FHP (P < 0.001) subjects in the HDRS; bF-score from analysis of variance. df: degrees of freedom; MDD: patients with major depressive disorder; FHN: healthy participants without family history of MDD; FHP: healthy participants with family history of MDD; HDRS: Hamilton Depression Rating Scale for Depression; ns: not significant; SD: standard deviation, Χ2: Chi-squared score, MR: Mean Rank