Table 1. Sociodemographic characteristics of BD patients and healthy subjects.

	BD patients (N=57)	Healthy subjects (N=31)	P-value
	Mean (s.d.)	Mean (s.d.)
BMI	24.1 (3.9)	23.1 (2.8)	0.24
Age	22.7 (4.5)	22.9 (4.5)	0.84
Years of education	13.9 (2.3)	15.1 (2.6)	0.03
	Percent (N)	Percent (N)
BMI category			0.28
Normal weight	64.9% (37)	80.6% (25)
Overweight	26.3% (15)	16.1% (5)
Obese	8.8% (5)	3.2% (1)
Gender			0.84
Male	47.4% (27)	45.2% (14)
Female	52.6% (30)	54.8% (17)
Ethnicity (self-reported)			0.11
Caucasian	78.9% (45)	64.5% (20)
Asian	17.5% (10)	35.5% (11)
Other	3.5% (2)	0% (0)

Abbreviations: BD, bipolar disorder; BMI, body mass index.