Table 1.

Demographic information, clinical features and medications for manic bipolar disorder (BD) subjects and healthy comparison subjects (HCS).

	BD patients	HCS	Group differences
Gender	26M, 24F	15M, 24F	ns
Age (years)	34.2 (12.7)	29.6 (10.7)	ns
Years of education	13.8 (2.1)	15.0 (1.6)	t (87) = 3.01, p = .003
Body Mass Index	27.4 (7.4)^a	25.0 (5.0)	ns
Clinical features
Age of onset of illness	22.7 (8.4)^b	-	-
Duration of illness (years)	11.1 (10.0)^b	-	-
Number of days in treatment	5.02 (4.96)	-	-
YMRS total score	26.0 (10.3)	-	-
BPRS total score	37.0 (12.9)	-	-
Medication at time of testing
Antipsychotic alone	n = 12 (24%)	-	-
Mood stabilizer alone	n = 4 (8%)	-	-
Antipsychotic plus mood stabilizer	n = 32 (64.0%)	-	-
Not medicated	n = 2 (4%)	-	-
Additional Medications
Benzodiazepine	n = 24 (48%)	-	-
Antidepressant	n = 1 (2%)	-	-

For all variables except gender and medications at time of testing values in the first column represent means and standard deviations.

BD = Bipolar Disorder, HCS = healthy comparison subject, M = male, F = female, ns = not significant, YMRS = Young Mania Rating Scale, BPRS = Brief Psychiatric Rating Scale.

Weight and height data were not available for two patients.

Age of onset and duration of illness could not be determined for three patients due to disorganized symptoms at the time of testing.