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Table 3 Association of serum ferritin, CRP and serum urate with gout flares/year

From: The relationship between ferritin and urate levels and risk of gout

Population Ferritin (ng ml− 1) C-reactive protein (mg dl− 1) Serum urate (mg dl− 1)
β (95% CI)a p a β (95% CI)b p b β (95% CI)a p a β (95% CI)a p a
NZ European 0.09
(0.003; 0.17)
0.042 0.069
(− 0.01; 0.14)
0.067 1.75
(− 3.85; 7.37)
0.54 − 0.61
(− 1.48; 0.25)
0.16
NZ Polynesian − 0.11
(− 0.24; 0.03)
0.14 −0.091
(− 0.22; 0.03)
0.15 −9.95
(− 23.75; 3.84)
0.16 −1.59
(− 3.88; 0.71)
0.17
US 0.02
(0.01; 0.04)
0.002 0.018
(0.001; 0.04)
0.043 0.10
(− 0.13; 0.35)
0.38 0.13
(− 0.04; 0.30)
0.13
  1. Values represent change in the annual frequency of flares per 10 ng ml− 1 increase in serum ferritin. Levels of urate are at the time of subject recruitment
  2. CRP C-reactive protein, CI confidence interval, NZ New Zealand, US United States
  3. aAdjusted for age, body mass index and number of self-reported Polynesian grandparents in the NZ Polynesian analyses
  4. bAdditionally adjusted for allopurinol usage