A group of psychiatric patients taking second generation antipsychotics developed Type 2 Diabetes. Diabetes mellitus is a group of metabolic diseases characterized by hyperglycemia resulting from
defects in insulin secretion, insulin action, or both. The prevalence of Type 2 diabetes mellitus is
increasing—more than 9% of the adult U.S. population currently has this disorder. Diabetes is a
leading cause of blindness, renal disease, and amputation and leads to increased mortality,
primarily from cardiovascular events. The fasting plasma glucose (FPG) test is a blood test that
determines the amount of glucose (sugar) in the blood after an overnight fast or after not eating
for at least 8 hours. An FPG of ≥126 indicates that a person has Type 2 diabetes. Supposed the
following test results were obtained for a screening test for diabetes with a cutoff ≥126 mg/dl.
A. Label the table with TP, FP, FN, and TN. Add the total to complete the table
Diabetes Non-Diabetes Total
Positive Test Results 27 25 ?
Negative Test Results 14 34 ?
Total ? ? ?
B. Calculate the sensitivity for this test. What does it mean in words?
C. Calculate the specificity for this test. What does it mean in words? 34/100