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Table 4 Serum vitamin D quartiles in relation to biochemical parameters and dietary intake

From: Determinants of serum levels of vitamin D: a study of life-style, menopausal status, dietary intake, serum calcium, and PTH

  Serum vitamin D quartile [nmol/L]
1 [18–69] n = 179 2 [70–86] n = 187 3 [87–104] n = 177 4 [105–173] n = 184 All n = 727
Column percent*
Albumin
 1 (30.0–39.0) 30.2 25.7 26.0 23.4 26.3
 2 (39.1–40.9) 21.2 24.6 20.3 23.9 22.6
 3 (41.0–42.2) 22.9 26.7 31.6 20.1 25.3
 4 (42.3–50.3) 22.9 22.5 21.5 32.1 24.8
Creatinine
 1 (42–58) 30.2 27.8 26.0 20.1 26.0
 2 (59–64) 22.3 24.6 24.3 21.2 23.1
 3 (65–71) 28.5 24.6 23.2 24.5 25.2
 4 (72–130) 16.2 22.5 26.0 33.7 24.6
Phosphate
 1 (0.66–1.07) 29.6 21.4 24.9 23.9 24.9
 2 (1.08–1.19) 29.6 26.7 24.9 19.0 25.0
 3 (1.20–1.32) 23.5 20.3 28.8 24.5 24.2
 4 (1.33–2.00) 14.5 31.0 20.9 32.1 24.8
PTH
 1 (0.38–2.63) 22.3 17.6 26.0 33.7 24.9
 2 (2.64–3.55) 18.4 27.3 29.9 22.3 24.5
 3 (3.56–4.89) 23.5 28.3 21.5 25.0 24.6
 4 (4.90–30.60) 34.1 25.1 22.6 18.5 25.0
Calcium
 1 (2.18–2.34) 35.8 26.2 22.6 24.5 27.2
 2 (2.35–2.38) 19.6 24.6 23.2 17.4 21.2
 3 (2.39–2.44) 26.8 23.5 27.7 26.1 26.0
 4 (2.45–2.77) 15.1 24.6 26.0 32.1 24.5
Vitamin D– dietary
 1 (0.83–7.19) 30.2 16.6 15.8 17.4 19.9
 2 (2.67–10.17) 21.8 21.4 16.9 20.1 20.1
 3 (2.66–11.86) 15.6 25.1 21.5 17.4 19.9
 4 (3.54–12.57) 19.0 17.1 21.5 22.8 20.1
 5 (5.14–22.83) 13.4 19.8 24.3 22.3 19.9
Calcium– dietary
 1 (275.8–1203.8) 21.8 19.3 16.9 21.7 19.9
 2 (435.5–1712.1) 19.0 23.0 19.2 19.0 20.1
 3 (460.7–1669.4) 17.3 18.7 23.7 20.1 19.9
 4 (636.6–2399.4) 21.2 16.6 22.6 20.1 20.1
 5 (779.5–2791.5) 20.7 22.5 17.5 19.0 19.9
Vitamin D–total**
 1 (0.83–9.31) 31.8 16.0 16.9 15.2 19.9
 2 (2.66–11.86) 20.7 25.7 12.4 21.2 20.1
 3 (3.97–12.57) 18.4 18.2 23.2 20.1 19.9
 4 (4.84–16.55) 12.8 20.9 24.3 22.3 20.1
 5 (6.47–37.01) 16.2 19.3 23.2 21.2 19.9
Calcium–total**
 1 (275.8–1203.8) 22.9 18.7 15.8 22.3 19.9
 2 (435.5–1712.1) 17.9 23.0 23.2 16.3 20.1
 3 (532.6–2089.9) 18.4 19.8 20.9 20.7 19.9
 4 (723.5–2399.4) 22.3 17.1 19.8 21.2 20.1
 5 (782.7–2986.8) 18.4 21.4 20.3 19.6 19.9
  1. * Due to missing values, percentages do not always add up to 100%. ** Intake from diet and supplements.