Table 5.

Comparison of the mean scores from the individual components of each disease activity evaluation between the Dutch and Portuguese populations.

	Remission		Low		Moderate		High
	z	p-Value	z	p-Value	z	p-Value	z	p-Value
A. DAS28-ESR
PGA	6.73	<0.0001	4.49	<0.0001	8.39	<0.0001	5.82	<0.0001
TJC28	6.24	<0.0001	6.84	<0.0001	−2.61	0.0090	−13.61	<0.0001
SJC28	3.65	0.0003	1.94	0.0520	−0.88	0.3791	−5.32	<0.0001
ESR	−14.33	<0.0001	−9.59	<0.0001	−13.41	<0.0001	−3.57	0.0004
DAS28-ESR	−7.34	<0.0001	−0.49	0.6245	−7.94	<0.0001	−10.44	<0.0001
B. CDAI
PGA	1.99	0.0465	−3.71	0.0002	4.64	<0.0001	4.40	<0.0001
MDGA	10.63	<0.0001	11.84	<0.0001	10.4	<0.0001	7.75	<0.0001
TJC28	1.37	0.1713	−3.38	0.0007	−7.95	<0.0001	−11.06	<0.0001
SJC28	−4.59	<0.0001	−4.26	<0.0001	−6.11	<0.0001	−5.99	<0.0001
CDAI	5.87	<0.0001	−0.85	0.3949	−2.85	0.0044	−8.76	<0.0001
C. SDAI
PGA	−3.56	0.0004	−1.77	0.0763	4.52	<0.0001	1.67	0.0955
MDGA	3.66	0.0003	9.13	<0.0001	13.58	<0.0001	6.79	<0.0001
TJC28	1.90	0.0575	0.06	0.9515	−0.31	0.7548	−2.37	0.0179
SJC28	−1.91	0.0555	−3.39	0.0007	−5.78	<0.0001	−3.52	0.0004
CRP	−1.54	0.1232	−2.4	0.0162	−7.27	<0.0001	−1.62	0.1050
SDAI	−0.86	0.3912	1.31	0.19	1.22	0.2233	−2.94	0.0033

Visits, number of visits (%); PGA, patient assessment of disease activity (100 mm); TJC28, 28 tender joint count; SJC28, 28 swollen joint count; MDGA, physician assessment of disease activity (100 mm); CRP, C-reactive protein (mg/l); ESR, erythrocyte sedimentation rate (mm/h); DAS28-ESR, disease activity score evaluating 28 joints; CDAI, clinical disease activity index; SDAI, simplified disease activity index; z, z-test for equality of two independent means (z > 0 if the mean for the Dutch population was higher than that of the Portuguese).