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Table 4 Adjusted mean values for serum biomarkers of oxidative stress across tertiles of energy-adjusted DTAC (n = 175)

From: Dietary total antioxidant capacity is inversely associated with depression, anxiety and some oxidative stress biomarkers in postmenopausal women: a cross-sectional study

Variables Tertiles of energy-adjusted DTAC
T1 (n = 58) T2 (n = 59) T3 (n = 58) P-value* Effect size of ANCOVA test
Mean 95% CI Mean 95% CI Mean 95% CI
TAC (mM) 0.44 0.42–0.45 0.46 0.44–0.47 0.44 0.42–0.45 0.04 0.03
MDA (µM) 5.3 4.7–6.0 4.8 4.2–5.4 3.4 3.0–3.8 < 0.001 0.13
Ox-LDL (ng/l) 1548.8 1339.6–1794.7 1655.7 1432.1–1918.6 1489.3 1285.2–1725.8 0.6 0.03
SOD (U/ml) 36.0 34.1–38.1 33.8 32.0–35.8 33.9 31.9–35.7 0.1 0.02
  1. Values are geometric means and 95% CI
  2. DTAC dietary total antioxidant capacity, TAC total antioxidant capacity, MDA malondialdehyde, Ox-LDL oxidized low-density lipoprotein, SOD superoxide dismutase
  3. * ANCOVA test, adjusted for age, time since menopause, education (year), waist circumference (cm), physical activity (MET min/week), dietary supplement use (yes/no), dietary intake of fiber (g/day), energy (kcal/day), and coffee (g/day)