Table 4

Discriminative ability of the preliminary ACR improvement criteria at different thresholds, EULAR response criterion, ACR and DAS remission criteria to distinguish between two treatment groups at two points of follow up

Criterion		Week 16			Week 28
Criterion		Improved^4-150	χ²		p Value	Improved^4-150	χ²	p Value
ACR improvement
0% Threshold	88v 63%	12.9	0.0003	82v 62%	7.3	0.007
10% Threshold	78 v44%	18.0	<0.0001	74 v49%	9.7	0.002
20%Threshold	72 v32%	25.7	<0.0001	72 v49%	8.6	0.003
30% Threshold	64 v24%	25.7	<0.0001	67 v39%	12.1	0.0005
40% Threshold	58v 16%	28.6	<0.0001	55v 30%	9.8	0.002
50%Threshold	43 v14%	16.6	<0.0001	49 v27%	8.1	0.004
60% Threshold	26 v8%	9.7	0.002	37 v22%	4.4	0.04
70%Threshold	16 v6%	3.6	0.06	29 v10%	8.8	0.003
EULAR response		20.2	<0.0001		13.4	0.001
Good + moderate	86 v56%			86 v63%
Good	37 v15%			47 v24%
ACR remission
‘Probable’	12v 6%	1.4	0.23	21v 11%	2.7	0.10
DAS remission
(DAS ⩽1.6)	12 v9%	0.4	0.54	17 v10%	1.6	0.20

↵4-150 Combined treatment (n=76) vsulfasalazine treatment (n=79) group.