Cross-cultural and clinical validation of the MDHAQ/RAPID3 questionnaire in electronic format for a Brazilian population of patients with rheumatoid arthritis

Table 2 Inter-component correlation coefficients (Spearman's correlation)**

	RAPID3	CDAI	SDAI	DAS28	TJC28	SJC28	VAS	PGA	EGA	MDHAQ	CRP
CDAI [n = 128]	0.61
SDAI [n = 127]	0.61	0.99
DAS28 (ESR)	0.53	0.88	0.89
TJC28	0.52	0.88	0.87	0.84
SJC28	0.41	0.82	0.82	0.74	0.78
VAS	0.90	0.58	0.58	0.49	0.45	0.40
PGA	0.64	0.78	0.80	0.68	0.56	0.47	0.64
EGA	0.52	0.87	0.86	0.76	0.73	0.69	0.44	0.71
MDHAQ	0.78	0.44	0.43	0.40	0.44	0.31	0.55	0.38	0.41
CRP [n = 127]	0.25	0.28	0.37	0.50	0.26	0.20*	0.24	0.32	0.21*	0.19*
ESR [n = 128]	0.12 Δ	0.23	0.28	0.58	0.22*	0.19*	0.09 Δ	0.18*	0.22*	0.13 Δ	0.60

TJC28 = Tender 28-joint count; SJC28 = Swollen 28-joint count; PGA = Patient's global assessment; EGA = Evaluator's global assessment; MDHAQ = Multidimensional Health Assessment Questionnaire; VAS = Visual analog scale; ESR = Erythrocyte sedimention rate; CRP = C-reactive protein; RAPID3 = Routine Assessment of Patient Index Data 3; DAS28 = Disease Activity Score 28
*The correlation is significant at the level of 0.05 (two-tailed), in the others the correlation is significant at the level of 0.01 (two-tailed)
**The number of subjects analyzed is 129, except when described in its component
Δ Not significant, p > 0.05

ISSN: 2523-3106