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Table 2 Dietary antioxidant intake

From: Modification of additive effect between vitamins and ETS on childhood asthma risk according to GSTP1 polymorphism : a cross -sectional study

  DRIs for Koreans (children aged 6–14 years) ETS (+) ETS (−) P-value*
Energy (kcal) 1500–1900 1808.31 ± 697.85 1826.91 ± 756.98 0.686
Vitamin A (μg RE) 400–700 712.28 ± 400.25 750.86 ± 479.37 0.151
Retinol (μ) - 227.88 ± 119.99 221.25 ± 120.26 0.376
Carotene (μg) - 2719.00 ± 1976.33 2979.41 ± 2487.95 0.055
Vitamin C (mg) 60–100 77.08 ± 62.41 77.05 ± 54.34 0.993
Vitamin E (mg) 7–10 13.40 ± 7.44 13.90 ± 8.46 0.308
  1. DRIs dietary reference intakes, ETS environmental tobacco smoke
  2. Nutrients were adjusted for total energy intake using the residual method
  3. *Nutrient intake in children exposed to ETS exposure versus those not exposed to ETS