Table 1

Mean annual costs (in euros) by disease and functional status (Hannover Functional Status Questionnaire or Health Assessment Questionnaire)

FFbH/HAQ	RA			AS			PsA			SLE
	>70	50–70	<50	>70	50–70	<50	>70	50–70	<50	>70	50–70	<50
	<1.2	1.2–1.7	>1.7	<1.2	1.2–1.7	>1.7	<1.2	1.2–1.7	>1.7	<1.2	1.2–1.7	>1.7
AS, ankylosing spondylitis; FCA, friction cost approach; FFbH, Hannover Functional Status Questionnaire; HAQ, Health Assessment Questionnaire; HCA, human capital approach; PsA, psoriatic arthritis; RA, rheumatoid arthritis; SLE, systemic lupus erythematosus.
*Including imaging and endoprosthetics.
n	2469	970	795	458	216	130	596	189	101	643	114	63
Mean age	51	54	55	44	47	49	48	51	54	41	48	49
Disability pension (%)	14	37	54	10	28	52	7	32	67	17	61	57
Direct costs
Visits to doctor	243	334	434	163	239	408	197	320	373	189	308	406
Drugs	1448	2176	2709	1644	1488	1389	961	1222	1702	825	947	992
Non-drug treatments*	254	538	765	251	390	496	182	502	743	120	408	435
Inpatient treatment	901	1907	3531	845	1278	1556	650	1921	2113	1295	2116	2755
Patient “out-of-pocket” expenditure	378	705	964	496	469	742	341	496	790	386	394	878
Σ	3225	5661	8403	3399	3865	4590	2331	4461	5721	2814	4174	5467
Indirect costs (loss of productivity)
Sick leave	856	3212	7619	1444	4045	6925	904	3051	8391	1486	5947	6941
Permanent work disability (HCA)	4731	12707	18894	3397	9882	18132	2364	11201	23329	6011	21073	19887
Permanent work disability (FCA)	752	2019	3002	540	1570	2881	376	1780	3707	955	3349	3160
Total costs (HCA)	8811	21580	34915	8241	17791	29647	5599	18712	37440	10311	31193	32296
Total costs (FCA)	4832	10892	19024	5384	9480	14396	3610	9292	17819	5255	13469	15569