Good results are obtained in about 40 percent of cases, fair results in some 35 percent and poor results in 25 percent. The mortality rate probably does not exceed 3 percent. Greatest improvement is seen in patients whose premorbid personalities were 'normal', cyclothymic, or obsessive compulsive; in patients with superior intelligence and good education; in psychoses with sudden onset and a clinical picture of affective symptoms of depression or anxiety, and with behaviouristic changes such as refusal of food, overactivity, and delusional ideas of a paranoid nature. 