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Table 1 Characteristics of the FDA AERS Data Set used to identify high-frequency concepts

From: Determining correspondences between high-frequency MedDRA concepts and SNOMED: a case study

  Therapeutic Indications Data Adverse Events Data
A. Number of records in data set (each record contains 1 Preferred Term) 850 K 1.19 M
B. Unique Preferred Terms in data set 5,540 10,304
C. Number of unique Preferred Terms already mapped to SNOMED CT in UMLS 3864 (69.7%) 6,409 (62.2%)
D. Number of unique Preferred Terms accounting for >95% of records ("high-frequency" Preferred Terms) 834 (15.1%), accounting for 60+ records each 2,871 (27.9%), accounting for 32+ records each
E. Number of high frequency Preferred Terms already mapped to SNOMED CT in UMLS 693 (83.1%) 2,226 (77.5%)
F. Number needing manual mapping (D-E) 141 645