Table 4.

Logistic Regressions Using Combinations of Arthritis, Joint Pain, and Physical Functioning with Uric Acid to Determine the Likelihood of Elevated Ferritin1,2,3

Uric AcidArthritis or Activity LimitationOdds Ratio (95% CI)
LowStooping normal1.00
LowStooping difficult1.07 (0.84–1.38)
HighStooping normal2.54 (2.01–3.22)
HighStooping difficult1.57 (1.12–2.19)
LowWalking normal1.00
LowWalking difficult1.04 (0.65–1.67)
HighWalking normal2.19 (1.78–2.69)
HighWalking difficult2.26 (1.25–4.08)
LowStanding normal1.00
LowStanding difficult1.19 (0.86–1.64)
HighStanding normal2.44 (1.97–3.03)
HighStanding difficult1.30 (0.83–2.03)
LowNo arthritis1.00
LowArthritis1.16 (0.92–1.48)
HighNo arthritis2.50 (1.97–3.19)
HighArthritis1.88 (1.35–2.62)
LowNo joint pain1.00
LowJoint pain1.04 (0.84–1.28)
HighNo joint pain2.48 (1.88–3.27)
HighJoint pain2.00 (1.51–2.66)
  • High uric acid: >7 mg/dL for men, >6 mg/dL for women. High ferritin: >300 ng/mL for men, >200 ng/mL for women. Adjusted for age, sex, race/ethnicity, kidney condition, liver condition, and alcohol consumption.