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Table 1 Demographics and biochemical markers (mean ± SD)

From: Omega-3 polyunsaturated fatty acids status and cognitive function in young women

  Total group (n = 288) Tertile 1 < 5.47 Tertile 2 = 5.47–6.75 Tertile 3 > 6.75 P-valuea
(n = 96) (n = 96) (n = 96)
Omega-3 Index (%) 6.3 ± 1.7 4.7 ± 0.8 6.1 ± 0.4 8.1 ± 1.5 < 0.0001
Age (y) 25.8 ± 5.1 25.3 ± 5.2 25.7 ± 5.2 26.2 ± 4.8 0.47
Education (y) 16.2 ± 2.2 15.7 ± 2.2 16.3 ± 2.1 16.6 ± 2.2 0.02
Weight (kg) 78.0 ± 22.9 85.6 ± 24.5 80.2 ± 22.7 68.0 ± 17.7 < 0.0001
BMI (kg/m2) 28.5 ± 8.4 31.6 ± 9.3 28.9 ± 8.2 25.1 ± 6.0 < 0.0001
Normal weight 18.5–24.9 150 34 48 68 < 0.0001
Obese weight ≥ 30.0 138 62 47 28
CRP (mg/L) Normal Range: < 5 mg/L 3.3 ± 4.2 4.0 ± 4.7 3.6 ± 4.2 2.3 ± 3.3 0.01
α1GP (mg/L) Normal Range: < 1 g/L 0.74 ± 0.22 0.82 ± 0.21 0.75 ± 0.21 0.66 ± 0.22 < 0.0001
Physical Activity (MET-min/wk) 2634 ± 2144 2641 ± 2121 2542 ± 2251 2718 ± 2074 0.85
SF (corrected) ug/L Normal range 20–300 g/L 42.9 ± 31.8 37.6 ± 26.4 44.4 ± 38.9 46.7 ± 28.2 0.12
Hb (g/L) Normal Range: 120–150 g/L 134.4 ± 9.8 135.9 ± 10.2 133.9 ± 10.0 133.3 ± 9.1 0.17
  1. aOne-way ANOVA on all variables except Chi-square test for weight category distributions. Abbreviations: O3I omega-3 index, BMI body mass index, CRP C-reactive Protein, α1GP alpha1-acid glycoprotein, MET metabolic equivalent of task, min minute, wk. week, SF serum ferritin, Hb hemoglobin. Missing data: α1GP (n = 10), Hb (n = 2)