Protein deficiency Posted on April 3, 2018 by developer is Protein deficiency (kwashiorkor) the main cause of oedema in children? READ ALSO : Muddy Murphy’s degree of financial leverage (DFL) is 4×. The company knows that if sales are 6 percent higher than forecasted, its EPS will increase by 36 percent. What is Muddy’s degree of operating leverage (DOL)?