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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