Table 1.
Oxidative balance score assignment scheme.
| OBS Components | Assignment Scheme * |
|---|---|
| 1. Saturated fatty acid [P] | 0 = high (3rd tertile), 1 = intermediate (2nd tertile), 2 = low (1st tertile) |
| 2. Omega-6 PUFA intake [P] | 0 = high (3rd tertile), 1 = intermediate (2nd tertile), 2 = low (1st tertile) |
| 3. Total iron intake [P] | 0 = high (3rd tertile), 1 = intermediate (2nd tertile), 2 = low (1st tertile) |
| 4. Copper intake [P] | 0 = high (3rd tertile), 1 = intermediate (2nd tertile), 2 = low (1st tertile) |
| 5. Smoking status [P] | 0 = current smoker, 1 = former smoker, 2 = never smoker |
| 6. Alcohol drinking status [P] | 0 = heavy drinker, 1 = mild-to-moderate drinker, 2 = non-drinker |
| 7. Overweight/obese [P] | 0 = obese, 1 = overweight, 2= normal |
| 8. Abdominal obesity [P] | 0 = abdominal obesity, 1 = normal |
| 9. Omega-3 PUFA intake [A] | 0 = low (1st tertile), 1 = intermediate (2nd tertile), 2 = high (3rd tertile) |
| 10. Vitamin C intake [A] | 0 = low (1st tertile), 1 = intermediate (2nd tertile), 2 = high (3rd tertile) |
| 11. Vitamin E intake [A] | 0 = low (1st tertile), 1 = intermediate (2nd tertile), 2 = high (3rd tertile) |
| 12. Selenium intake [A] | 0 = low (1st tertile), 1 = intermediate (2nd tertile), 2 = high (3rd tertile) |
| 13. Total beta-carotene intake [A] | 0 = low (1st tertile), 1 = intermediate (2nd tertile), 2 = high (3rd tertile) |
| 14. Zinc intake [A] | 0 = low (1st tertile), 1 = intermediate (2nd tertile), 2 = high (3rd tertile) |
| 15. Physical activity [A] | 0 = low intensity, 1 = moderate intensity, 2 = high intensity |
* Low, intermediate, and high categories correspond to sex-specific tertile values among participants in the KoGES at the baseline survey. Abbreviations: OBS, oxidative balance score; PUFA, polyunsaturated fatty acid. (Reprinted with permission of authors [27].)