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The CAGE test is a test physicians use to screen for possible alcohol problems. This examination consists of four questions. Patient agreement with two of

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The CAGE test is a test physicians use to screen for possible alcohol problems. This examination consists of four questions. Patient agreement with two of more of these questions suggests a problem with alcohol. Here are the data for one assessment of the overall quality of this test. Overall Accuracy is defined as Overall Accuracy . (Prevalence) . Sensitivity + (1 -Prevalence) * Specificity. The prevalence of a condition is just the probability that the condition will be present in the population studied. What is the overall accuracy for the CAGE test based on these screening results? TABLE 6.18 Alcohol Test Results Truth llegarding Problem Predicted by CAGE Test No Alcohol Problems Alcohol Problem No Alcohol Problem 100 57 Alcohol Problem 60 Totals 117 528 0.885 0513 60.226 O 0998 D Question 5 3 pts Overall Accuracy is defined as Overall Accuracy . (Prevalence) x Sensitivity . (1 . Prevalence) . Specificity. The table below lists some generic values for sensitivity, specificity, and prevalence, Match each triplet of with the letter that brit describes the resulting overall accuracy value from the list alongside the table. Choose your answer from the list of possible answers shown here. TABLE 8.31 Sensitivity Prevalence A. High smin to Seeufry Low High Low Low Any Values C. High Under to Seminivly Any Value between O Anund between D. Com, Simiat to Specitchy and 1 Low Low OI -CU.NR - END.V-B

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