A compound attribute that is the ratio of amount of 11-beta-hydroxysteroid dehydrogenase 1 (human) in blood to amount of sphingomyelin phosphodiesterase (human) in blood. The trait is HSD11B1/SMPD1 protein level ratio in blood (OBA_2053076, an Ontology of Biological Attributes id). Also known as: the ratio of amount of 11-beta-hydroxysteroid dehydrogenase 1 (human) in blood to amount of sphingomyelin phosphodiesterase (human) in blood.