Risk Scores & Prediction Rules

Validated decision rules that turn clinical findings into probabilities and management guidance. Covers PE workup (Wells, PERC, PESI), pneumonia severity (CURB-65, PSI), COPD progression (BODE, CAT), sleep apnea screening (STOP-BANG, Epworth), and PAH risk. Each score includes the original thresholds and interpretation guidance.

13 calculators available

Wells Score for PE

Pretest probability of pulmonary embolism.

PERC Rule

Rules out PE in low-risk patients when all criteria are negative.

CURB-65

Quick pneumonia severity and admission score.

Pneumonia Severity Index (PSI)

Detailed 5-class pneumonia mortality score.

Nursing-Home Pneumonia Mortality

Mortality prediction tuned for nursing-home residents.

Epworth Sleepiness Scale

Daytime sleepiness screen for sleep apnea.

STOP-BANG

Obstructive sleep apnea screening checklist.

BODE Index (COPD)

Multi-factor COPD survival prediction.

CAT Score (COPD)

Patient-reported COPD symptom burden.

Six-Minute Walk Distance

Predicted 6-minute walk distance for functional capacity.

Postoperative Pulmonary Complication Risk

ARISCAT-style pre-op pulmonary risk.

PESI / Simplified PESI

PE mortality risk to guide outpatient treatment.

REVEAL PAH Risk Score

Prognostic risk score for pulmonary arterial hypertension.