Table 2.

Demographic and clinical differences between bipolar with and without psychosis.

	Bipolar (NPBD)		Bipolar with Psychosis (PBD)
N	67		192
Variable	N	%	N	%
Sex*
Male	19	28.4	81	42.2
Female	48	71.6	111	57.8
Race
Caucasian	46	68.7	129	67.2
African American	15	22.4	45	23.4
Other	6	9.0	18	9.4
On antipsychotic medication*	26	38.8	115	59.9
On lithium	15	22.4	36	18.8
On valproic acid	8	11.9	25	13.0
On sedative medication	25	37.3	48	25.0
	Mean	SD	Mean	SD
Chlorpromazine equivalent dose (mg/day)^	269.43	218.37	275.93	225.06
Lithium dose (mg/day)^	825	354.97	948.57	414.89
Valproic acid dose (mg/day)^	925	600.17	1100	450.69
Age (years)*	41.39	12.72	36.41	11.58
Years of Education	14.49	2.98	14.62	2.32
WRAT4 Reading	97.19	15.09	100.11	14.72
BACS Composite	−.673	.830	−.722	.776
PANSS Total	60.59	16.59	58.41	20.12
PANSS Positive	13.08	3.75	13.74	5.59
PANSS Negative	15.37	6.52	13.77	6.37
MADRS Total	15.02	9.82	14.15	11.79
YMRS Total	9.59	7.20	8.54	7.97
SBS Total	1.80	.96	1.93	1.31
BIS Total	71.32	12.57	71.32	14.54
BIS Attention	19.31	4.43	18.72	5.32
BIS Motor	24.94	5.09	25.39	5.69
BIS Non-planning	27.08	5.57	27.22	6.25
SST Proportion Errors Baseline Go Trials	.039	.048	.036	.048
SST Proportion Errors SST Go Trials	.141	.092	.113	.082
SST Proportion Errors SST Stop Trials	.379	.124	.376	.137
SST Baseline Go RT	347.94	44.70	340.76	49.05
SST Proper Go RT	459.50	36.26	454.03	37.28
SST Baseline-Proper Go RT Difference	111.56	38.31	113.27	40.71
SSRT	268.10	6.37	260.62	3.95

WRAT = Wide Range Achievement Test; BACS = Brief Assessment of Cognition in Schizophrenia; PANSS = Positive and Negative Symptom Scale; MADRS = Montgomery-Asberg Depression Rating Scale; YMRS = Young Mania Rating Scale; SBS = Schizo-Bipolar Scale; BIS = Barratt Impulsiveness Scale.

^*p <.05;

^{^}Includes only those prescribed each medication.