Table 1 Oxidative balance score (OBS) items and score assignment
OBS items | Property | 0 | 1 | 2 |
|---|---|---|---|---|
Dietary OBS components | ||||
Dietary fiber (g/d) | Antioxidant | < 13.00 | 13.00–20.00 | ≥ 20.00 |
Carotene (RE/d) | Antioxidant | < 564.00 | 564.00-1672.50 | ≥ 1672.50 |
Riboflavin (mg/d) | Antioxidant | < 2.02 | 2.02–2.86 | ≥ 2.86 |
Niacin (mg/d) | Antioxidant | < 22.38 | 22.38–31.34 | ≥ 31.34 |
Vitamin B6 (mg/d) | Antioxidant | < 1.66 | 1.66–2.50 | ≥ 2.50 |
Total folate (mcg/d) | Antioxidant | < 346.00 | 346.00-514.00 | ≥ 514.00 |
Vitamin B12 (mcg/d) | Antioxidant | < 3.84 | 3.84–6.61 | ≥ 6.61 |
Vitamin C (mg/d) | Antioxidant | < 41.45 | 41.45-110.25 | ≥ 110.25 |
Vitamin E (ATE) (mg/d) | Antioxidant | < 5.60 | 5.60–8.64 | ≥ 8.64 |
Calcium (mg/d) | Antioxidant | < 680.00 | 68.00-1101.50 | ≥ 1101.50 |
Magnesium (mg/d) | Antioxidant | < 257.00 | 257.00-358.50 | ≥ 358.50 |
Zinc (mg/d) | Antioxidant | < 10.49 | 10.49–15.66 | ≥ 15.66 |
Copper (mg/d) | Antioxidant | < 1.15 | 1.15–1.59 | ≥ 1.59 |
Selenium (mcg/d) | Antioxidant | < 100.90 | 100.90-144.30 | ≥ 144.30 |
Total fat (g/d) | Prooxidant | ≥ 110.47 | 74.47-110.47 | < 74.47 |
Iron (mg/d) | Prooxidant | ≥ 20.01 | 13.74–20.01 | < 13.74 |
Lifestyle OBS components | ||||
Physical activity (MET-minute/30d) | Antioxidant | < 2527.50 | 2527.50–7440.00 | ≥ 7440.00 |
Alcohol (g/d) | Prooxidant | > 11.15 | 0-11.15 | ≥ 0 |
Body mass index (kg/m2) | Prooxidant | ≥ 29.28 | 25.62–29.28 | < 25.62 |
Cotinine (ng/mL) | Prooxidant | ≥ 2.73 | 0.04–2.73 | < 0.04 |