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. Author manuscript; available in PMC: 2010 Jun 1.
Published in final edited form as: Am J Psychiatry. 2009 May 1;166(6):702–710. doi: 10.1176/appi.ajp.2008.08081201

TABLE 1.

Sociodemographic and Clinical Data in MDD (N=30) and Comparison (N=31) Subjects

Comparison subjects MDD subjects
Mean SD Mean SD Statistics P value
Age 38.80 14.48 43.17 12.98 t(59)=-1.36 >0.18
% Female 42% N/A 50% N/A χ2(1)=0.39 >0.53
Education 15.19 1.96 14.87 2.37 t(59)=0.59 >0.55
Ethnicity (% Caucasian) 77% N/A 67% N/A χ2(1)=0.73 >0.39
Marital status (% married) 22.6% N/A 23.3% N/A χ2(1)=0.001 >0.50
Employment (% employed) 58.1% N/A 40.0% N/A χ2(1)=1.99 >0.15
Age of MDD onset (years) N/A N/A 29.39 15.98 N/A N/A
Length of current MDE (months) N/A N/A 37.13 78.24 N/A N/A
Number of prior MDEs N/A N/A 3.69 2.64 N/A N/A
BDI-II* 2.20 2.41 27.48 10.60 t(55)=12.12 <0.001
HRSD (17-item) N/A N/A 17.97 4.9 N/A N/A

BDI-II: Beck Depression Inventory-II (26); HRSD: Hamilton Rating Scale for Depression (25).

*

BDI scores were not available for 3 MDD subjects and one comparison subjects.