Evidence Based Calculators

Clinical decision rules attempt to formally test, simplify, and increase the accuracy of clinicians’ diagnostic and prognostic assessments. Rules that have been validated in multiple clinical settings are considered the highest level of evidence and most appropriate for implementation. The following five rules have been selected based on evidence and the potential to inform clinical judgment, to change clinical behavior and reduce unnecessary costs while maintaining quality of care and patient satisfaction.

Centor Score for Diagnosis of Strep Throat

With the model, patients can be stratified into varying probability groups for Strep throat and this stratification gives the physician valuable information for management options.

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Heckerling Clinical Decision Rule for the Diagnosis of Pneumonia

Patients are stratified on the basis of clinical information into subgroups with differing probabilities of having pneumonia and the further need for chest x-ray is determined with greater accuracy.

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Wells Score for Pulmonary Embolism

The combination of a low score by the simple clinical prediction rule and a negative D-Dimer result may safely exclude pulmonary embolism in a large proportion of patients with suspected pulmonary embolism.

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Wells Score for Deep Vein Thrombosis

Physicians are able to accurately stratify patients with suspected deep-vein thrombosis into three distinct pretest probabilities with the model.

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Tuberculosis Clinical Prediction Rule

The goal of the model is to allow adequate respiratory precautions on hospital admission of contagious patients while minimizing the isolation of patients without Tuberculosis.

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MELD (Model for End-Stage Liver Disease)

A Model to Predict Survival in Patients With End-Stage Liver Disease

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4T Score for Heparin-induced Thrombocytopenia (HIT)

Clinical scoring system to differentiate patients with HIT from those with other causes for thrombocytopenia

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CHA2DS2-VASc score for Atrial fibrillation stroke

Clinical risk stratification for predicting stroke and thromboembolism in patients with atrial fibrillation

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TIMI Risk Score for UA/NSTEMI

Risk score for prognostication and therapeutic decision making in patients with unstable angina/NSTEMI

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CURB 65

Clinical scoring system to stratify patients with CAP into inpatient vs. outpatient management

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