Upon adjustment for gender , initial event , baseline age and BMI , the risk of developing a major cardiovascular event decreased significantly in successive quartiles of arachidonic acid ( P trend < 0.002 ) , total omega 3 polyunsaturated fatty acids ( P trend < 0.03 ) , docosapentaenoic acid ( P trend < 0.019 ) , docosahexaenoic acid ( P trend < 0.004 ) , eicosapentaenoic acid + docosahexaenoic acid ( P trend < 0.03 ) and eicosapentaenoic acid + docosapentaenoic acid + docosahexaenoic acid ( P trend < 0.02 ) .