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Table 2 Comparison of average values of serum ferritin (ng ml− 1) in gout case–control groups and the association with gout

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

Population

Comparison of average

Association analysis

p

(95% CI)for difference

OR (95% CI)a

p a

OR (95% CI)b

p b

NZ European

0.21

(−97.46; 22.02)

1.01 (0.99; 1.03)

0.22

1.00 (0.97; 1.02)

0.84

NZ Polynesian

2.3E–04

(− 211.88; − 66.31)

1.03 (1.01; 1.05)

1.7E–03

1.03 (1.01; 1.06)

1.8E–03

US

6.6E–17

(− 167.19; − 107.16)

1.25 (1.07; 1.17)

1.5E–06

1.11 (1.07; 1.17)

7.4E–06

US no allopurinol

6.6E–17

(−167.19; − 107.16)

1.11 (1.07; 1.16)

4.5E–06

1.11 (1.06; 1.16)

2.4E–05

Meta-analysisc

–

–

1.04 (1.01; 1.08)

0.02

1.04 (0.99; 1.09)

0.09

  1. All OR values represent change in risk per 10 ng ml−1 increase in serum ferritin
  2. CI confidence interval, OR odds ratio, NZ New Zealand, US United States
  3. aUnadjusted
  4. bAdjusted for age, body mass index, C-reactive protein and number of self-reported Polynesian grandparents in the NZ Polynesian analyses
  5. cOnly sample sets not stratified for allopurinol exposure were included in the meta-analysis
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Arthritis Research & Therapy

ISSN: 1478-6362

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