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Table 1 The number of expert-defined parameters in each ATC class

From: From prescription drug purchases to drug use periods – a second generation method (PRE2DUP)

1st level ATC codes and common names Number of ATC parameters Number of vnr parameters
A: Alimentary tract and metabolism 31 354
B: Blood and blood forming organs 10 74
C: Cardiovascular system 13  
D: Dermatological drugs 12  
G: Genitourinary system and reproductive hormones 8 43
H: Systemic hormonal preparations, excluding reproductive hormones and insulins 6  
J: Antiinfectives for systemic use 7  
L: Antineoplastic and immunomodulating agents 5  
M: Musculoskeletal system 12 519
N: Nervous system 15 989
P: Antiparasitic products, insecticides and repellents 5  
R: Respiratory system 13  
S: Sensory organs 15  
V: Various ATC structures 22  
Total 174 2226