Subscales scores [2–8]	Rheumatoid arthritis		Axial spondyloarthritis		Psoriatic arthritis		p	Differences between IA
	N=411 (61.0%)		N=202 (30.0%)		N=61 (9.1%)
	mean	(Q1–Q3)	mean	(Q1–Q3)	mean	(Q1–Q3)
Behavioural disengagement	2.9	(2.0–4.0)	3.0	(2.0–4.0)	2.5	(2.0–3.0)	0.02	PsA/RA or AS
Religion	3.2	(2.0–4.0)	2.7	(2.0–3.0)	2.7	(2.0–3.0)	0.004	RA/AS or PsA
Acceptance	6.6	(6.0–8.0)	6.3	(5.0–8.0)	6.7	(6.0–8.0)	0.02	RA/AS
Humour	3.4	(2–4)	3.3	(2.0–4.0)	3.9	(3.0–4.5)	0.01	PsA/RA or AS