Table 1.

Classification of clinically relevant medication discrepancies in medication histories. A drug omission or commission and an incorrect dose or dosage regimen concerning these drugs were considered clinically relevant discrepancies. Groups were based on the World Health Organization’s Anatomical Therapeutic Chemical (ATC) classification system.

Anatomical or pharmacological group	Chemical, pharmacological, or therapeutic subgroup
A. Alimentary tract and metabolism	A10 drugs used in diabetes
B. Blood and blood forming organs	B01A antithrombotic agents B02 antihemorrhagics
C. Cardiovascular system	C01 cardiac therapy C02 antihypertensives C03 diuretics C04 peripheral vasodilators C07 beta blocking agents C08 calcium channel blockers C09 agents acting on the renin-angiotensin system
H. Systemic hormonal preparations. (excluding sex hormones and insulins)	H01 pituitary and hypothalamic hormones and analogs H02 corticosteroids for systemic use
J. Anti-infectives for systemic use	J01 antibacterials for systemic use J02 antimycotics for systemic use J04 antimycobacterials J05 antivirals for systemic use J06 immune sera and immunoglobulins
L. Antineoplastic and immunomodulating agents	L01 antineoplastic agents L03 immunostimulants L04 immunosuppressants
N. Nervous system	N02A opioids N03 antiepileptics N05 psycholeptics N07A parasympathomimetics N07B drugs used in addictive disorders N07X other nervous system drugs
P. Antiparasitic products, insecticides, and repellents	P01 antiprotozoals
R. Respiratory system	R03 drugs for obstructive airway disease