According to ATC-codes, drug discrepancies were most common in groups N (central nervous system), A (alimentary tract and metabolism) and C (cardiovascular system).
Lyfjaávísanir af ATC-flokkum N (tauga- og geðlyf), A (meltingarfæra- og efnaskiptalyf) og C (hjarta- og æðasjúkdómalyf) höfðu flest lyfjamisræmi.