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. Author manuscript; available in PMC: 2017 Nov 1.
Published in final edited form as: Hum Brain Mapp. 2016 Nov;37(11):3733–3744. doi: 10.1002/hbm.23271

Table 1.

Demographics and clinical characteristics of the sample

Males (n=51) Females (n=48) Between Group Comparison

Ethnicity
% Caucasian (n) 68.63% (35/51) 52.08% (25/48) No difference
% Other (n) 3.92% (2/51) 14.58% (7/48)
% Missing (n) 27.45% (14/51) 33.33% (16/48)

Handedness
% Right-handed (n) 90.20% (46/51) 93.75% (45/48) No difference

Age
in years; M (SD) 45.02 (3.88) 44.33 (4.77) No difference

BMI
M (SD) 29.17 (5.15) 29.86 (6.89) No difference

Parental SESa
% Lowest SES quartile (n) 23.53% (12/51) 20.83% (10/48) No difference
% Lower middle SES quartile (n) 23.53% (12/51) 18.75% (9/48)
% Higher middle SES quartile (n) 21.57% (11/51) 25.00% (12/48)
% Highest SES quartile (n) 19.61% (10/51) 20.83% (10/48)
% Missing (n) 11.76% (6/51) 12.50% (6/48)

Education level
% Without completed high school (n) 9.8% (5/51) 4.17% (2/48) No difference
% Completed high school (n) 21.57% (11/51) 14.58% (7/48)
% More than high school (n) 66.67% (34/51) 77.08% (37/48)
% Missing (n) 1.96% (1/51) 4.17% (2/48)

WAIS vocabulary, age-scaled
M (SD) 11.18 (3.35) 10.09 (3.08) No difference

WAIS block design, age-scaled
M (SD) 11.67 (3.35) 9.74 (2.98) Males > Females

DSM-based diagnosis
% MDD in remission (n) 25.49% (13/51) 29.17% (14/48) No difference
% Psychosis (n) 31.37% (16/51) 31.25% (15/48)
% Healthy controls (n) 43.14% (22/51) 39.58% (19/48)

Psychotropic medication
% on psychotropic medication (n) 35.29% (18/51) 31.25% (15/48) No difference

Substance use disorder
% with any substance use disorder (n) 64.72% (33/51) 16.67% (8/48) Males > Females
a

Parental socioeconomic status (SES) was assigned a single, continuous score for education, occupation, and family income according to the system used for the United States Bureau of the Census (Myrianthopoulos & French, 1968). This composite index ranged from 0.0 (low) to 9.5 (high).

Myrianthopoulos, N.C., & French, K.S. (1968). An application of the US Bureau of the Census socioeconomic index to a large, diversified patient population, Soc Sci Med, 2, 283–299.