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. 2025 Aug 21;16:15. doi: 10.1186/s13326-025-00337-2

Table 5.

The percentage of mapped concepts per MedDRA system organ class. The maximum penalty score is between − 2.0 and 2.0

MedDRA system organ class Mapped concepts (%)
Ear and labyrinth disorders 79
Cardiac disorders 73
Gastrointestinal disorders 64
Eye disorders 64
Endocrine disorders 64
Hepatobiliary disorders 62
Respiratory, thoracic and mediastinal disorders 60
Musculoskeletal and connective tissue disorders 59
Nervous system disorders 56
Renal and urinary disorders 54
Vascular disorders 53
Reproductive system and breast disorders 53
Skin and subcutaneous tissue disorders 51
Blood and lymphatic system disorders 50
Infections and infestations 46
Neoplasms benign, malignant and unspecified (incl cysts and polyps) 44
Immune system disorders 44
Congenital, familial and genetic disorders 39
Pregnancy, puerperium and perinatal conditions 34
Metabolism and nutrition disorders 31
Surgical and medical procedures 30
General disorders and administration site conditions 26
Psychiatric disorders 22
Injury, poisoning and procedural complications 22
Investigations 18
Social circumstances 7
Product issues 7