Figure A1.

Receiver operating characteristic (ROC) curve accuracy of the models to predict 5 days and 8 days length of hospital stay. For both 5 days and 8 days prediction, model 1 showed higher accuracy than model 2. Model 1 includes the following variables: pulmonary embolism severity index (PESI) score, body mass index (BMI), a medical history of dyslipidemia, diabetes or previous PE, NT-proBNP and troponin-T hs, housing situation before admission and admission via GP. Model 2 only includes the PESI score. Pulmonary embolism severity index score is based age at entry, sex, history of cancer, history of chronic lung disease, history of heart failure, respiratory rate, hypothermia [below 36°C], systolic blood pressure (BP) <100 mmHg, heart rate (HR) ≥110 bpm, oxygen saturation below 90%, altered mental status, and respiratory rate ≥ 30 breaths per minute (18).