Table 1

Characteristics of patients diagnosed as having rheumatoid arthritis (n=40) by the end of the study

ACR criteria	Diagnosis (months)	APF + (months)	Difference (months)	APF titre	Latex (IU)	Rose-Waaler (IU)
5	1	-		-	-	-
4	4	-		-	-	-
4	5	-		-	-	-
4	26	-		-	-	-
4	35	-		-	-	-
4	39	-		-	-	-
4	40	-		-	-	-
4	41	-		-	-	-
5	2	-		-	100	64
4	24	26	2	1:5000	100	32
5	11	12	1	1:500	50	64
4	2	2	0	1:1000	50	0
6	2	2	0	1:100	100	32
6	3	3	0	1:10 000	100	16
4	3	3	0	1:100	0	0
4	5	5	0	1:200	25	32
4	5	5	0	1:100	0	0
4	5	5	0	1:2000	100	0
5	6	6	0	1:100	0	0
4	7	7	0	1:1000	0	32
4	10	10	0	1:200	0	0
6	11	11	0	1:500	50	64
5	1	0	−1	1:2000	50	0
4	8	6	−2	1:500	50	64
4	8	5	−3	1:200	50	0
4	8	6	−2	1:100	0	0
4	9	8	−1	1:500	0	0
4	10	6	−4	1:1000	100	32
5	11	0	−11	1:500	0	0
4	12	6	−6	1:10 000	100	64
4	13	6	−7	1:500	50	0
4	14	5	−9	1:100	0	0
4	15	9	−6	1:100	50	32
4	16	12	−4	1:100	0	0
4	17	9	−8	1:1000	0	0
4	17	2	−15	1:500	0	0
4	26	10	−16	1:500	100	64
4	29	20	−9	1:200	50	32
4	40	25	−15	1:2000	100	128
4	41	1	−40	1:100	50	32

ACR, American College of Rheumatology; APF, antiperinuclear factors.