Table 4.

Values of PASDAS and CPDAI according to different definitions of low disease activity.

Variables	In Low Disease Activity by Criteria			Not in Low Disease Activity by Criteria			Z^*
Variables	Median	Mean	Range	Median	Mean	Range	Z^*
PASDAS
MDA-5	2.35	2.41	0.43–5.11	4.96	4.90	1.82–9.00	12.0
MDA-6	1.88	1.90	0.43–3.41	4.66	4.69	1.37–9.00	10.6
MDA-7	1.42	1.51	0.43–3.23	4.46	4.52	1.37–9.00	8.2
MDA-joints	2.04	2.18	0.43–5.11	4.74	4.73	1.67–9.00	10.7
CPDAI
MDA-5	2	2.38	1–6	6	6.36	1–13	13.4
MDA-6	2	2.14	1–6	6	5.96	1–13	10.8
MDA-7	2	1.86	1–3	5	5.72	1–13	8.5
MDA-joints	2	2.21	1–6	6	6.09	1–13	11.8

↵* Z statistic from Mann-Whitney U test. All values are highly significant. PASDAS: Psoriatic Arthritis Disease Activity Score; CPDAI: Composite Psoriatic Disease Activity Index; MDA-5: MDA criteria with 5 items required; MDA-6: MDA criteria with 6 items required; MDA-7: MDA criteria with 7 items required; MDA-joints: MDA criteria mandating the articular items.