Table 4

Dimension scores by disease characteristics. Values are given as mean (SD) or as median (IQR)

		Sex		Rheumatoid factor		Disease duration
	Possible range	Male	Female	Positive	Negative	≤2 Years	>2 Years
p<0.05; p<0.001; **p<0.0001.
For abbreviations see table 2.
Impairment
SF-36 BP	0–100	48 (24)	44 (24)	44 (24)	48 (24)*	44 (22)	46 (25)
DAS28	0–10	3.9 (1.7)	4.3 (1.5)***	4.3 (1.5)	3.8 (1.6)**	4.2 (1.6)	4.2 (1.6)
RADAI	0–10	2.9 (1.6–3.6)	3.3 (1.8–5.1)	3.4 (1.9–5.0)	2.9 (1.6–4.5)*	3.3 (2.0–5.1)	3.1 (1.7–4.9)
x Ray score	0–160	4 (0–21)	6 (1–24)	7 (1–26)	3 (0–14)***	0 (0–5)	9 (2–32)***
Activity limitation
HAQ	0–3	0.8 (0.1–1.5)	1.1 (0.5–1.8)***	1.1 (0.5–1.8)	0.8 (0.1–1.5)**	0.9 (0.3–1.4)	1.1 (0.5–1.8)***
SF-36 PF	0–100	63 (40–85)	55 (30–80)**	55 (30–80)	65 (40–83)*	66 (40–85)	55 (30–80)**
Participation restriction
SF-36 SF	0–100	88 (63–100)	75 (63–100)	75 (50–100)	88 (63–100)	75 (63–75)	88 (56–100)
SF-36 RE	0–100	100 (33–100)	100 (33–100)	100 (33–100)	100 (33–100)	100 (0–100)	100 (33–100)
SF-36 RP	0–100	50 (0–100)	25 (0–100)*	25 (0–100)	50 (0–100)	25 (0–75)	25 (0–100)