Table 1 Oxidative balance score assignment scheme

Dietary OBS components

 Dietary fiber (g/d)

A

< 11.70

11.70–19.90

≥ 19.90

< 10.00

10.00-16.70

≥ 16.70

 Carotene (RE/d)

A

< 65.70

65.70–258.00

≥ 258.00

< 68.30

68.30–296.00

≥ 296.00

 Riboflavin (mg/d)

A

< 1.55

1.55–2.40

≥ 2.40

< 1.22

1.22–1.84

≥ 1.84

 Niacin (mg/d)

A

< 20.50

20.50–32.00

≥ 32.00

< 14.80

14.80–23.10

≥ 23.10

 Vitamin B₆ (mg/d)

A

< 1.52

1.52–2.43

≥ 2.43

< 1.10

1.10–1.81

≥ 1.81

 Total folate (mcg/d)

A

< 279.00

279.00-454.00

≥ 454.00

< 223.00

223.00-350.00

≥ 350.00

 Vitamin B₁₂ (mcg/d)

A

< 2.80

2.80–5.58

≥ 5.58

< 1.93

1.93–3.88

≥ 3.88

 Vitamin C (mg/d)

A

< 42.44

42.44-113.21

≥ 113.21

< 38.01

38.01–98.49

≥ 98.49

 Vitamin E (ATE) (mg/d)

A

< 6.31

6.31–10.80

≥ 10.80

< 5.35

5.35–8.93

≥ 8.93

 Calcium (mg/d)

A

< 674.00

674.00-1126.00

≥ 1126.00

< 561.00

561.00-916.00

≥ 916.00

 Magnesium (mg/d)

A

< 240.00

240.00-365.00

≥ 365.00

< 196.00

196.00-288.00

≥ 288.00

 Zinc (mg/d)

A

< 8.43

8.43–13.50

≥ 13.50

< 6.19

6.19–9.78

≥ 9.78

 Copper (mg/d)

A

< 0.90

0.90–1.39

≥ 1.39

< 0.74

0.74–1.14

≥ 1.14

 Selenium (mcg/d)

A

< 93.40

93.40–146.00

≥ 146.00

< 69.70

69.70–106.00

≥ 106.00

 Total fat (g/d)

P

≥ 113.00

70.30–113.00

< 70.30

≥ 85.80

55.50–85.80

< 55.50

 Iron (mg/d)

P

≥ 17.00

11.00–17.00

< 11.00

≥ 13.00

8.35-13.00

< 8.35

Lifestyle OBS components

 Physical activity (MET-minute/week)

A

< 400

400-1,000

≥ 1,000

< 400

400-1,000

≥ 1,000

 Alcohol (g/d)

P

≥ 30

0–30

None

≥ 15

0–15

None

 Body mass index (kg/m²)

P

> 30

25–30

< 25

> 30

25–30

< 25

 Cotinine (ng/mL)

P

≥ 1.12

0.017–1.12

< 0.017

≥ 0.09

0.011–0.09

< 0.011