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Noncardiac drug classes highly represented in the top 20 drugs.
| ATCa code (first level) |
Drug class | Ranks in top 20 | NDCG@20b |
| N | Nervous system | 6, 9, 11, 15, 17, 19 | 0.35 |
| B | Blood and blood-forming organs | 10, 11, 14 | 0.17 |
| A | Alimentary tract and metabolism | 11, 18 | 0.12 |
aATC: Anatomical Therapeutic Chemical Classification System.
bNDCG@20: normalized discounted cumulative gain for the top 20 drugs.
