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. Author manuscript; available in PMC: 2014 Feb 26.
Published in final edited form as: JAMA Psychiatry. 2013 Apr;70(4):373–382. doi: 10.1001/jamapsychiatry.2013.455

Table 1.

Demographic and Clinical Characteristics of Study Participants

No.
Dysthymic Participants
(n = 41)		 Healthy Control Subjects
(n = 25)		 Test Statistic P Value
Age, mean (SD), y 37.8 (9.0) 33.0 (11.9) t = 1.9 .07
Sex
  Male 24 17 graphic file with name nihms548588t1.jpg χ2 = 0.6 .44
  Female 17 8
Handedness
  Right 38 24 graphic file with name nihms548588t2.jpg χ2 = 0.3 .58
  Left 3 1
Highest level of education
  College or greater 25 18 graphic file with name nihms548588t3.jpg Mann-Whitney U = 375.0 .06
  High school 14 4
  Below high school 0 2
  Not specified 2 1
Race/ethnicity
  White 30 19 graphic file with name nihms548588t4.jpg χ2 = 5.5 .20
  African American 9 3
  Hispanic 1 1
  Asian 1 0
  Not specified 0 2
Anxiety disorder
  Current 16 0
  Past 12 0
Prior episode of MDD 19 0
Prior substance abuse 11 0

Abbreviation: MDD, major depressive disorder.