Module 2: evaluation of the REVEAL risk score in the FPHN validation cohort. Module 2: evaluation of the REVEAL risk score in the FPHN validation cohort. Groups shown in grey were not included in the analysis. REVEAL: Registry to Evaluate Early and Long-term PAH Disease Management; FPHN: French Pulmonary Hypertension Network; WHO: World Health Organization; PH: pulmonary hypertension; PAH: pulmonary arterial hypertension; PVOD: pulmonary veno-occlusive disease; PCH: pulmonary capillary haemangiomatosis; PCWP: pulmonary capillary wedge pressure; mPAP: mean pulmonary artery pressure; PVR: pulmonary vascular resistance. #: As recorded at time of patient initial diagnostic workup in FPHN Registry. Olivier Sitbon et al. Eur Respir J 2015;46:152-164 ©2015 by European Respiratory Society