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Table 1 Characteristics of the study population

From: Iron and hepcidin as risk factors in atherosclerosis: what do the genes say?

Variable† Total N Median (P5-P95) or N (%)*
Gender, males 1819 900 (49 %)
Age at inclusion, years 1819 62.9 (42.2–76.0)
Time of blood sampling 1811  
Before 12:00 pm   374 (21 %)
Between 12:00 pm and 5:00 pm   1165 (64 %)
After 5:00 pm   272 (15 %)
Serum hepcidin, nmoles/L 1810 7.5 (0.9–22.5)
Serum ferritin, μg/L 1817 120.7 (17.8–421.4)
Hepcidin/ferritin, μmoles/μg 1808 60.3 (20.9–170.3)
Hepcidin/TS, μmoles/L/% 1791 0.25 (0.04–0.96)
Serum iron, μmoles/L 1800 17.0 (9.0–27.0)
TIBC, μmoles/L 1800 58.0 (46.0–75.0)
TS, % 1800 28.8 (14.1–48.1)
IMT, mm 549 0.85 (0.70–1.05)
ABI at rest 549 1.10 (0.96–1.27)
ABI after exercise 542 1.11 (0.76–1.34)
Presence of plaque 549 232 (42 %)
  1. ABI indicates ankle-brachial index, IMT intima media thickness, N number, P5 fifth percentile, P95 95th percentile, TIBC total iron-binding capacity; and TS transferrin saturation
  2. *Continuous variables are presented as median (P5-P95). Categorical variables are presented as N (%)
  3. †Hepcidin, ferritin, hepcidin/ferritin, hepcidin/TS, iron, TIBC, TS and time of blood sampling were measured in 2002 and presence of plaque, IMT, and ABI at rest and after exercise were measured between 2005 and 2008