cr_possum               CR-POSSUM predicted mortality
cr_possum_operative     CR-POSSUM operative score
cr_possum_physiology    CR-POSSUM physiological score
p_possum                P-POSSUM predicted mortality
possum                  POSSUM predicted morbidity and mortality
possum_operative        POSSUM operative severity score
possum_physiology       POSSUM physiological score
possum_risk             POSSUM and P-POSSUM risk for a table of
                        patients
raaa_possum             RAAA-POSSUM predicted mortality (ruptured
                        abdominal aortic aneurysm)
v_possum                V-POSSUM predicted mortality (vascular)
