Pathway-Driven Approaches of Interaction between Oxidative Balance and Genetic Polymorphism on Metabolic Syndrome

Table 2

Oxidative balance score assignment scheme.

OBS components	Score assignment scheme
Iron	0 = high (3rd tertile), 1 = medium (2nd tertile), and 2 = low (1st tertile)
Vitamin C	0 = low (1st tertile), 1 = medium (2nd tertile), and 2 = high (3rd tertile)
Retinol	0 = low (1st tertile), 1 = medium (2nd tertile), and 2 = high (3rd tertile)
Carotene	0 = low (1st tertile), 1 = medium (2nd tertile), and 2 = high (3rd tertile)
Physical activity (Phy-MET)	0 = low (1st tertile), 1 = medium (2nd tertile), and 2 = high (3rd tertile)
Smoking	0 = current smoker, 1 = former smoker, and 2 = never smoker
Alcohol	0 = heavy drinker (≥50 g/day), 2 = nonheavy drinker (<50 g/day)

Low, medium, and high categories corresponding to baseline tertile values among participants in the KARE cohort.