Fig. 7From: The original and two new derivative versions of the COMPERA 2.0 risk assessment model: useful tools for guiding balloon pulmonary angioplastyThe correlation between the number of BPA session and the occurrence of secondary endpoints, stratified by the risk profiles at baseline. A, C The original 4- stratum model. B, D The hybrid 4-stratum model. Data are presented as median (interquartile range)Back to article page