Fig. 1From: How to interact with medical terminologies? Formative usability evaluations comparing three approaches for supporting the use of MedDRA by pharmacovigilance specialistsIllustration of the heterogeneity of the MedDRA categories used to code the ADR “Myocardial infarction”. Relevant PT (green circle) are found in two SOC (“investigations” and “cardiac disorders”). Some HLT categories contain both relevant and irrelevant (red circle) termsBack to article page