<prompt> Sensitivity is a measure ofTrue positiveFalse positiveTrue negativeFalse negative  <response>: A True positive Term Sensitivity was introduced by Yarushalmy in 1940s as a statistical index of diagnostic accuracy. It has been defined as the ability of a test to identify correctly all those who have the disease, that is True positive. A 90 sensitivity means that 90 of the diseased people screened by the test will give a true positive result and remaining 10 a false negative result. Sensitivity has been defined as the ability of a test to identify correctly all those who have the disease, that is true positive. Sensitivity: the ability of a test to identify correctly all those who have the disease, i.e. true positive ... aa c x 100 Specificity: The ability of a test to identify correctly those who do not have the disease i.e. true negative ...dbd x 100 