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However if you only use the test on old people with the symptoms of the disease in order to confirm the diagnosis    then you may get the result as shown.
One Hundred (100) people get the test 60 of them have the disease, and with sensitivity and specificity of 95%, you get a predictive value of a positive test of 57 out of 59 (97%) and the predictive value of a negative test of 38 out of 41 (93%). This means that the test is really useful.