The Padua prediction score is designed specifically for hospitalized patients admitted with acute medical illness, as opposed to surgical or cancer-treatment-specific populations covered by other risk-assessment tools. It helps identify which medical inpatients face a high enough thrombosis risk to warrant pharmacologic prophylaxis. This distinction matters because risk factors and typical risk levels differ between medical and surgical inpatient populations.

Active cancer and a prior history of venous thromboembolism carry among the highest weighted points in the Padua scoring system, reflecting their strong independent association with thrombosis risk. Reduced mobility, recent trauma or surgery, and advanced age also contribute to the overall score. The cumulative weighted score determines whether a patient falls into a high-risk category warranting prophylaxis.

A commonly used threshold considers patients with a Padua score of four or more to be at high risk and appropriate candidates for pharmacologic thromboprophylaxis, in the absence of contraindications. Patients below this threshold are generally considered lower risk and may not require pharmacologic prevention. Healthcare professionals should always weigh the score alongside individual bleeding risk before finalizing a prophylaxis decision.