Table 1.

Sample Demographics, QBS (quantitative bipolarity scale) score and QBS subscores across diagnostic groups

	Bipolar disorder	Major depressive disorder	Psychotic disorder	Other psychiatric illness	Control	Test statistic (F or x2)	P-value
N	20	61	3	26	200
Gender (Male:female)	12:8	21:40	1:2	12:14	88:112	1.2	0.31
Age	50.3 ± 3.1	42.4 ± 2.1	41 ± 16	44.4 ± 3.3	41.1 ± 1.4	4.5	0.35
QBS score	31.5 ± 3.6*	16.7 ± 2.0	14.7 ± 4.9	7.0 ± 1.9	6.0 ± 0.6	30.6	2 × 10−21
Mood fluctuation subscore	5.9 ± 0.7*	3.6 ± 0.4	3 ± 1	2.0 ± 0.6	1.5 ± 0.2	18.5	1 × 10−13
Depression subscore	6.4 ± 1.1	5.0 ± 0.5	3.3 ± 0.9	2.0 ± .06	1.2 ± 0.1	30.6	2 × 10−21
Mania subscore	17.7 ± 2.0*	7.2 ± 1.2	7.3 ± 3.2	2.4 ± 0.8	2.9 ± 0.4	28.1	7 × 10−20

Data are recorded as mean ± standard error. Asterisk indicates measure with significant difference (p < 0.5) between bipolar disorder and major depression