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Table 3 Odds ratio and 95% confidence intervals for elevated (cutoff 1 mg/L) serum CRP concentrations by low or high dietary TAC groups in 443 Japanese women aged 18–22 years

From: Dietary total antioxidant capacity from different assays in relation to serum C-reactive protein among young Japanese women

 

Category of dietary TAC

 

Low (n = 221)

High (n = 222)

FRAP (mmol Fe2+/d)*†

7.41 (0.71-10.60)

16.03 (10.61-37.17)

  n (%) with elevated CRP

18 (8.1)

7 (3.2)

  Crude model

1 (ref)

0.37 (0.15-0.90)

  Multivariate model‡

1 (ref)

0.39 (0.16-0.98)

ORAC (mmol TE/d)*†

12.43 (1.18-16.73)

24.13 (16.78-50.77)

  n (%) with elevated CRP

17 (7.7)

8 (3.6)

  Crude model

1 (ref)

0.45 (0.19-1.06)

  Multivariate model‡

1 (ref)

0.48 (0.20-1.14)

TEAC (mmol TE/d)*†

4.67 (0.44-6.25)

8.83 (6.26-31.75)

  n (%) with elevated CRP

19 (8.6)

6 (2.7)

  Crude model

1 (ref)

0.30 (0.12-0.75)

  Multivariate model‡

1 (ref)

0.32 (0.12-0.82)

TRAP (mmol TE/d)*†

4.34 (0.31-6.66)

10.23 (6.71-52.42)

  n (%) with elevated CRP

19 (8.6)

6 (2.7)

  Crude model

1 (ref)

0.30 (0.12-0.75)

  Multivariate model‡

1 (ref)

0.31 (0.12-0.81)

  1. CRP C-reactive protein, TAC total antioxidant capacity, FRAP ferric reducing ability of plasma, ORAC oxygen radical absorbance capacity, TEAC Trolox equivalent antioxidant capacity, TRAP total radical-trapping antioxidant parameter, TE Trolox equivalent; ref, reference.
  2. * Values are medians (ranges).
  3. † Energy adjustment was performed according to the residual method.
  4. ‡ Adjusted for residential region [north (Kanto and Tohoku), central (Tokai and Hokuriku), and south (Kyushu and Chugoku)], size of residential area (city with a population ≥1 million, city with a population <1 million, and town and village), current smoking (yes or no), alcohol drinking (yes or no), dietary supplement use (yes or no), physical activity level (total metabolic equivalents-hours/d, continuous), body mass index (kg/m2, continuous), and n-3 polyunsaturated fatty acid intake (g/d, energy-adjusted, continuous).