Serum/plasma concentrations of vitamins, subgroups of fatty acids, fatty acid indexes and activity index of desaturases according to smoking status1.

1 Given as median (25th, 75th percentile). Missing values: Folate: n = 2 (0.1%); B2: n = 2 (0.1%); B6: n = 2 (0.1%); B12: n = 494 (36.2%); MMA: n = 2 (0.1%). AA, arachidonic acid; B2, riboflavin; B6, pyridoxal 5’-phosphatase; B12, cobalamin; D5D, delta 5 desaturase; D6D, delta 6 desaturase; MMA, methylmalonic acid; omega-3 index, (EPA + DHA) of total fatty acids; n-3 D5D, EPA/eicosatetraeonic acid; n-3 D6D, stearidonic acid/alpha linolenic acid; n-6 D5D, arachidonic acid/dihomo-γ-linolenic acid; n-6 D6D, γ-linolenic acid/ linoleic acid; SFA, saturated fatty acids.2 Difference between smokers and non-smokers were calculated by Mann-Whitney U test.3 EPA/AA-ratio * 100Serum/plasma concentrations of vitamins, subgroups of fatty acids, fatty acid indexes and activity index of desaturases according to smoking status1.