Figure 2. The rate of change in insulin dosage beginning 14 days before delivery, using the formula (“insulin dosage at delivery”– “insulin dosage 14 days before delivery”)÷14. The vertical axis shows the rate of change in insulin dosage and the horizontal axis shows the case number. A positive change in ratio of insulin dosage indicated that insulin usage increased close to delivery. In contrast, a negative change meant a decrease in the amount of insulin used. The patients in Cases 24 and 28 were presumed to have hemolysis, elevated liver enzymes, and low platelet syndrome and their rates of change are indicated.