Table 2.

Period prevalence of the 10 most frequently used drug groups in the first year of follow-up and during total follow-up, with their main individual drugs as example

Drug group	ATC code	First year of follow-up		Total follow-up
		No. of users	Period prevalence (%)a	No. of users	Period prevalence (%)a
Proton pump inhibitors	A02BC	3030	53.9	3833	68.2
Pantoprazole	A02BC02	1404	25.0	1963	34.9
Omeprazole	A02BC01	1149	20.5	1809	32.2
Sulfonamide diuretics, plain	C03CA	2322	41.3	2800	49.8
Furosemide	C03CA01	2001	35.6	2470	44.0
Osmotically acting laxatives	A06AD	1832	32.6	2791	49.7
Lactulose	A06AD11	1155	20.6	1661	29.6
Macrogol, combinations	A06AD65	804	14.3	1623	28.9
Aldosterone antagonists	C03DA	2451	43.6	2755	49.0
Spironolactone	C03DA01	2428	43.2	2734	48.7
Benzodiazepine derivates, anxiolytics	N05BA	1216	21.6	1763	31.4
Oxazepam	N05BA	741	13.2	1121	20.0
Benzodiazepine derivates, hypnotics and sedatives	N05CD	1125	20.0	1638	29.2
Temazepam	N05CD07	869	15.5	1302	23.2
Anilides	N02BE	906	16.1	1592	28.3
Paracetamol	N02BE01	637	11.3	1199	21.3
Beta-blocking agents, non-selective	C07AA	1215	21.6	1465	26.1
Propranolol	C07AA05	1146	20.4	1354	24.1
Combinations of penicillins, incl. beta-lactamase inhibitors	J01CR	538	9.6	1416	25.2
Amoxicillin and enzyme inhibitor	J01CR02	538	9.6	1416	25.2
Glucocorticoids	H02AB	726	12.9	1413	25.2
Prednisolone	H02AB06	511	9.1	982	17.5

Drug groups are defined as ATC 4th-level subgroups, and individual drugs are defined as ATC 5th-level drugs. Drugs are sorted in descending order by the total follow-up prevalence of the drug group

ATC Anatomical Therapeutic Chemical

^aPercentages do not round up to 100% because patients can be counted in more than one group