tokens: On average , age - specific mortality rates were slightly higher for the 101 patients whose paracetamol - induced liver injury had caused an acute liver failure ( adjusted mortality rate ratio = 1 . 70 , 95 % CI 1 . 02 - 2 . 85 ) , but the association was age - dependent , and no survivors of acute liver failure died of liver disease , whereas suicides were frequent in both groups .