Q. 4 In a retrospective study of 71 knees scanned by MRI. One of the indicators they examined was the absence of the "bow-tie sign" in the MRI as evidence of a bucket-handle or "bucket-handle type" tear of the meniscus. In the study, surgery confirmed that 43 of the 71 cases were bucket-handle tears. The cases may be cross-classified by "bow-tie sign" status and surgical results as follows: Tear Surgically Confirmed as Test result Confirmed (D) not present (D) Positive Test 38 10 (absent bow-tie design)(7) Negative Test (absent bow-tie design)(T) 5 18 (a) What is the sensitivity and specificity of testing to see if the absent bow- tie sign indicates a meniscal tear? (b) What additional information would you need to determine the predictive value of the test?

Q. 4 In a retrospective study of 71 knees scanned by MRI. One of the indicators they examined was the absence of the "bow-tie sign" in the MRI as evidence of a bucket-handle or "bucket-handle type" tear of the meniscus. In the study, surgery confirmed that 43 of the 71 cases were bucket-handle tears. The cases may be cross-classified by "bow-tie sign" status and surgical results as follows: Tear Surgically Confirmed as Test result Confirmed (D) not present (D) Positive Test 38 10 (absent bow-tie design)(7) Negative Test (absent bow-tie design)(T) 5 18 (a) What is the sensitivity and specificity of testing to see if the absent bow- tie sign indicates a meniscal tear? (b) What additional information would you need to determine the predictive value of the test?

Name: Q. 4 In a retrospective study of 71 knees scanned by MRI. One of thei
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Description: Q. 4 In a retrospective study of 71 knees scanned by MRI. One of theindicators they examined was the absence of the "bow-tie sign" in the MRIas evidence of a bucket-handle or "bucket-handle type" tear of themeniscus. In the study, surgery confirmed

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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