Table 1.

Demographic characteristics of the study population.

Characteristics	All volunteers (n = 90)	Malays (n = 34)	Chinese (n = 49)	Indians (n = 7)	P value
Age (yrs)	24.1 ± 3.6	22.4 ± 1.4	25.3 ± 4.4	24.3 ± 1.8	0.055
Male sex	34 (37.8)	16 (47.1)	15 (30.6)	3 (42.9)	0.254
BMI (kg/m²)	21.3 ± 3.2	22.6 ± 3.4	20.1 ± 2.4	21.4 ± 4.2	0.014
Smokers	1 (1.1)	1 (2.9)	0 (0)	0 (0)	0.424
CYP2C19*2	54 (60.0)	17 (50.0)	33 (67.3)	4 (57.1)	0.348
CYP2C19*3	3 (3.3)	2 (5.9)	1 (2.0)	0 (0)	0.877

Values are mean ± SD or n (%).