The results of a blinded study assessing the use of plasma D-dimer levels for diagnosing deep...

The results of a blinded study assessing the use of plasma D-dimer levels for diagnosing deep venous thrombosis (DVT) in patients hospitalized for stroke rehabilitation reported increased accuracy over the standard procedure involving ultrasound. To test the claims of this research team, an independent researcher conducted a study to determine if there was a difference in the accuracy of diagnosis for DVT between the two methods. The data in the table below summarize the findings of this study.

diagnostic test:	correctly diagnosed	not correctly diagnosed
Plasma D-dimer	85	20
Ultrasound	72	38

Construct a 95% CI for p1 – p2, where group1 is the plasma D-dimer and group2 is the ultrasound group.

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Expert Solution

Colby Messinger answered 2 years ago

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