Table 4

The most frequent patient co-morbidity clustering profiles: prescribed drugs—ATC therapeutic class*

Drugs†	Natural opium alkaloids	Benzodiazepine derivatives	HMG CoA reductase inhibitors	Anilides	Penicillins with extended spectrum	Proton pump inhibitors	Cephalosporins and related substances	Coxibs	ACE inhibitors plain	Corticosteroids potent (group III)	Per 1000 patients
*Prescribed drugs contributing to each co-prescribing profile cluster are marked with “•” Concurrent prescribed ATC classes marked with “•” may not be at the same ATC level. †Co-morbidity prescribing profiles based on prescribed ATC class have been reproduced in decreasing order of frequency until a cluster containing each of the top 10 that have frequencies above 0 have been identified.
2						•		•			9.9
2			•						•		9.8
2							•			•	5.8
2	•	•									5.4
2					•					•	4.6
2			•			•					4.5
2				•	•						4.2
2		•		•							3.9
2				•				•			3.8
3	•	•		•							2.1
3					•		•			•	2.0
3			•	•					•		1.9
3			•			•			•		1.9
3	•	•						•			1.8
4	•	•		•				•			1.0
4			•	•		•		•			0.9
4		•		•		•		•			0.8
4			•	•				•	•		0.8
4	•	•		•		•					0.8
4			•	•		•			•		0.8
4		•	•		•	•					0.7
4	•	•				•		•			0.7
4	•			•		•		•			0.6
4		•	•	•				•			0.6
4			•			•		•	•		0.6
4		•		•		•				•	0.5
4		•	•	•					•		0.5
4		•		•		•	•				0.5
4		•		•		•			•		0.5
4	•	•			•		•				0.5
5	•	•		•		•		•			0.8
5		•	•	•		•		•			0.4
5	•	•	•	•				•			0.4
5	•	•	•	•		•					0.4
5	•	•		•		•				•	0.4
6	•	•	•	•		•		•			0.3
6	•	•		•		•	•			•	0.2
Per 1000 patients	14.5	21.5	20.6	13.2	43.9	17.2	40.9	15.1	14.5	25.7