Table 2.

Prevalence of indicator markers and keywords in the records of rheumatoid arthritis patients in the year preceding diagnosis, and time interval before RA diagnosis

	MEN N = 2,007				WOMEN N = 4,380
Indicator markers	Prevalence of marker		Interval		Prevalence of marker		Interval
			(days before RA code)				(days before RA code)
	N	%	Median	IQR	N	%	Median	[IQR]
Inflammatory arthritis diagnosis	237	11.8	79	[22–154]	469	10.7	71	[17–175]
Synovitis	65	3.2	66	[22–153]	114	2.6	84	[28–188]
RhF test	1,114	55.5	49	[9–137]	2,397	54.7	43	[6–127]
DMARD prescription (not including steroids)	681	33.9	45	[0–309]	1353	30.9	71	[0–326]
Referral to Rheum	811	40.4	66	[13–183]	1642	37.5	70	[11–193]
Joint sign or symptom	1032	51.4	132	[54.5-245]	2202	50.3	133.5	[52–259]
Keywords	Prevalence of keyword		Interval		Prevalence of keyword		Interval
			(days before RA code)				(days before RA code )
	N	%	Median	IQR	N	%	Median	IQR
Rheumatoid A	590	29.4	37	[0–121]	1,262	28.8	28	[0–122]
Positive RhF test	911	45.4	49	[7–136]	2,033	46.4	47	[7–151]
Inflammatory arthritis	378	18.8	70	[17–168]	790	18.0	78	[21–183]
Synovitis	379	18.9	57	[7–159]	789	18.0	55	[7–160]