We stress the importance of clinical probability of disease, which strongly influences the positive predictive value (true-positive rate) and negative predictive value (true-negative rate) of all diagnostic t...
We identified 100 cohorts comparing US to venography in patients with suspected DVT. Overall sensitivity for proximal DVT (95% confidence interval) was 94.2% (93.2 to 95.0), for distal DVT was 63.5% (59.8 to 67.0), and specificity was 93.8% (93.1 to 94.4). Duplex US had pooled sensitivit...
Venous thromboembolism (VTE) is a common disorder that can lead to substantial morbidity and mortality through the clinical manifestations of deep vein thrombosis (DVT) and pulmonary embolism (PE). Although rapid diagnosis and treatment are critical in preventing PE, mortality and major morbidity due...
To demonstrate how to fit the POR model, we use a recent meta-analysis of diagnostic tests for deep vein thrombosis (DVT) by Heim et al. [20]. In this meta-analysis there are 23 papers and 21 tests, comprising 483 potential performance measurements, while only 66 are actually observed, ...
Presents research which reviewed the validity of the clinical assessment and diagnostic tests in patients with suspected deep vein thrombosis (DVT). Method... Anand,S Sonia,Wells,... - 《Jama Journal of the American Medical Association》
Clinicians, patients, governments, third-party payers, and the public take for granted that diagnostic tests are accurate, safe and effective. However, we may be seriously misled if we are relying on robust study design to ensure accurate, safe, and effe
BACKGROUND: Point-of-care D-dimer tests have recently been introduced to enable rapid exclusion of deep venous thrombosis (DVT) without the need to refer a patient for conventional laboratory-based D-dimer testing. Before implementation in practice, however, the diagnostic accuracy of each test sh...
Davis's Lab & Diagnostic Tests Plethysmography General General General Synonym/Acronym:Pulse volume recordings, PVR.RationaleTo measure changes in blood vessel size or changes in gas volume in the lungs to assist in diagnosing diseases such as deep vein thrombosis (DVT), chronic obstructive ...
The efficacy analysis of traditional coagulation tests, thrombus molecular markers, and thromboelastogram for predicting DVT in traumatic lower limb fractures was conducted using ROC curve analysis. The results indicated that the AUC values for PT and APTT of conventional coagulation tests were 0.440 an...
5. Test and Treat Superiority Plot: estimating threshold performance for developers of tests for treatment response Neil Hawkins1, Janet Bouttell1, Andrew Briggs2, Dmitry Pomonomarev3 1Health Economics and Health Technology Assessment, Institute of Health and Wellbeing, 1 Lilybank Gardens, Glasgow...