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Table 2 Total antioxidant and lipid peroxidation status of the representative sample

From: Diet, iron biomarkers and oxidative stress in a representative sample of Mediterranean population

 

All participants (n=815)

p value

Men (1)(n=390)

p value

Women (2)(n=425)

p value

p value (1–2)

ORAC (mmol TE/L plasma)

7.23

(7.08-7.41)

 

7.22

(7.01-7.44)

 

7.25

(7.03-7.48)

 

0.982

ORAC age group (years):

  group I (18–29)

7.21

(6.92-7.51)

1.0 (I-II)

7.61

(7.21-8.04)

1.0 (I-II)

6.89

(6.49-7.3)

1.0 (I-II)

0.347

  group II (30–44)

6.77

(6.52-7.02)

1.0 (I-III)

6.64

(6.31-6.98)

1.0 (I-III)

6.89

(6.53-7.26)

1.0 (I-III)

0.687

  group III (45–64)

7.51

(7.24-7.79)

1.0 (I-IV)

7.24

(6.85-7.63)

1.0 (I-IV)

7.77

(7.39-8.16)

1.0 (I-IV)

0.471

  group IV (65–75)

8.07

(7.5-8.65)

0.817 (II-III)

8.34

(7.61-9.09)

1.0 (II-III)

7.84

(6.99-8.71)

1.0 (II-III)

0.778

   

0.358 (II-IV)

  

0.454 (II-IV)

  

1.0 (II-IV)

   

1.0 (III-IV)

  

1.0 (III-IV)

  

1.0 (III-IV)

TBARS (nmol/mL plasma)

0.93

(0.84-1.03)

 

0.91

(0.78-1.06)

 

0.94

(0.81-1.07)

 

0.244

TBARS age group (years):

  group I (18–29)

0.85

(0.66-1.04)

0.004 (I-II)

0.82

(0.54-1.12)

0.037 (I-II)

0.87

(0.62-1.12)

0.167 (I-II)

0.230

  group II (30–44)

0.93

(0.78-1.09)

<0.001 (I-III)

0.92

0.92 (0.71-1.14)

<0.001 (I-III)

0.94

(0.73-1.17)

0.04 (I-III)

0.440

  group III (45–64)

0.97

(0.8-1.14)

<0.001 (I-IV)

0.97

0.97 (0.73-1.22)

0.034 (I-IV)

0.96

(0.93-1.21)

0.016 (I-IV)

0.852

  group IV (65–75)

0.98

(0.72-1.25)

0.771 (II-III)

0.95

0.95 (0.58-1.34)

0.759 (II-III)

1.01

(0.64-1.38)

1.0 (II-III)

0.361

   

0.665 (II-IV)

  

1.0 (II-IV)

  

0.989 (II-IV)

   

1.0 (III-IV)

  

1.0 (III-IV)

  

1.0 (III-IV)

  1. Values represent geometric mean (IC 95%). ORAC oxygen radical absorbance capacity, TBARS thiobarbituric acid reactive substances. p-value adjusted with bonferroni correction