Table 3.

Consistency analysis between DAS28-ESR and DAS28-CRP.

	DAS28-CRP
DAS28-ESR	Remission	LDA	MDA	HDA	Weighted kappa
Remission	2047	290	99	0	0.6822∗
LDA	1043	701	302	0
MDA	577	2153	8224	233
HAD	0	3	4136	10,693

^∗P < 0.001. The patients’ numbers of different disease activity groups based on two DAIs appear in the table. The numbers on the diagonal from the top left to the bottom right are the numbers of patients in the same disease activity groups. Non-concordant rate = (total number – number grouped consistent)/total number. This group was 28.97%; other groups underwent the same calculation method. CRP: C-reactive protein; DAS28: Disease activity score 28; ESR: Erythrocyte sedimentation rate; HDA: High disease activity; LDA: Low disease activity; MDA: Moderate disease activity.