The risk of clinically diagnosed gout by serum urate levels: results from 30 years follow-up of the Malmö Preventive Project cohort in southern Sweden

Table 4 Incidence per 100,000 person-years at risk and hazard ratios (HRs) for developing incident gout in men and women by different levels of urate at baseline healthcare screening. Results are presented separately for the two time periods; (a) baseline screening until 1998; and (b) from 1998 to end of study period

SU at baseline, μmol/L	Time period from baseline screening to 1998					Time period from 1998 to end of study
SU at baseline, μmol/L	Incident gout (n)	Person-years at risk	Inc. (95% CI)*	HR unadjusted (95%CI)	HR age adjusted (95%CI)	Incident gout (n)	Person-years at risk	Inc. (95% CI)*	HR un-adjusted (95%CI)	HR age adjusted (95%CI)
Men
≤ 360	8	322,368	2.5 (1.1–4.9)	1	1	447	188,039	237.7 (216.2–260.8)	1	1
361–405	7	63,617	11.0 (4.4–22.7)	4.4 (1.6–12.2)	4.4 (1.6–12.2)	227	35,336	642.4 (561.5–731.67)	2.7 (2.3–3.2)	2.7(2.3–3.2)
> 405	31	41,172	75.3 (51.2–106.9)	30.2 (13.9–65.8)	28.6 (13.1–62.3)	292	19,714	1481 (1316–1661)	6.5 (5.6–7.5)	6.4 (5.6–7.5)
Women
≤ 360	1	143,968	0.7 (0.009–0.4)	n.a.	n.a.	200	137,282	145.7 (126.2–167.3)	1	1
361–405	2	4026	49.7 (5.6–179.3)	n.a.	n.a.	25	3735	669.3 (433.1–981.1)	4.7(3.1–7.2)	4.4 (2.9–6.7)
> 405	3	2048	146.5 (29.5–428)	n.a.	n.a.	29	1589	1825 (1222–2621)	14.0 (9.4–20.6)	13.1 (8.8–19.4)

ISSN: 1478-6362