Table 1.

Characteristics of acutely admitted bipolar disorder patients with and without cycle acceleration

		Cycle acceleration		Non-Cycle Acceleration
	Total N*	n = 100	47.6%	n = 110	52.4%	Statistic†	P-value
Socio-demographic features
Gender, n (%)
Female	210	60	60	52	47	3.41	0.065
Male		40	40	58	53
Age, mean ± SD		41	±14	44	±14	−1.89	0.061
Education, some college plus, n (%)	210	29	29	41	37	1.61	0.20
Disability pension, n (%)	210	48	48	52	47	0.01	0.92
Own children, n (%)	210	62	62	70	64	0.06	0.81
Married or cohabitating, n (%)	204	30	31	42	39	1.54	0.21
Psychiatric morbidity
Bipolar disorder I or II, n (%)
BD I	210	56	56	87	79	12.9	<0.0001
BD II		44	44	23	21
Index episode, n (%)
Depression	210	65	65	48	44	9.62	0.002
Mania or mixed		35	35	62	56
Alcohol and/or substance use disorder, lifetime, n (%)	210	28	28	29	26	0.07	0.79
Diagnosis of psychosis, lifetime, n (%)	210	34	34	65	59	13.2	<0.0001

^*Statistical analyses were performed for the subsamples in this column due to missing data in some variables.

^†Statistic: Contingency tables (χ²) and Independent samples t-test (t).

SD, Standard deviation; BD, Bipolar disorder.