Table 5 Mean serum vitamin D levels in relation to biochemical parameters and dietary intake

Albumin

 1

191

87.0 (82.5–91.6)

Ref.

 2

164

91.2 (86.4–95.9)

0.344

 3

184

88.7 (84.1–93.3)

0.730

 4

180

91.7 (87.0–96.4)

0.058

0.076

Creatinine

 1

189

88.4 (84.0–92.9)

Ref.

 2

168

88.2 (83.5–92.8)

0.337

 3

183

87.1 (82.2–91.9)

0.581

 4

179

94.5 (89.8–99.2)

0.001

0.003

Phosphate

 1

181

89.8 (84.3–95.3)

Ref.

 2

182

83.5 (79.3–87.8)

0.177

 3

176

91.3 (86.7–95.8)

0.308

 4

180

93.5 (89.1–97.8)

0.012

<0.001

PTH

 1

181

95.3 (90.3–100.3)

Ref.

 2

178

89.7 (85.5–93.8)

0.035

 3

179

89.0 (84.4–93.6)

0.029

 4

182

84.5 (79.7–89.3)

<0.001

0.002

Calcium

 1

198

86.6 (82.1–91.1)

Ref.

 2

154

85.7 (81.0–90.3)

0.425

 3

189

90.9 (86.1–95.8)

0.067

 4

178

93.8 (89.2–98.3)

<0.001

0.001

Vitamin D–dietary

 1

145

81.1 (76.5 – 85.6)

Ref.

 2

146

86.7 (82.3 – 91.1)

0.08

 3

145

88.3 (84.1 – 92.6)

0.02

 4

146

92.1 (87.4 – 96.7)

0.001

 5

145

93.1 (88.9 – 97.4)

<0.001

0.001

Calcium–dietary

 1

145

87.3 (82.7 – 91.9)

Ref.

 2

146

88.2 (83.8 – 92.6)

0.79

 3

145

90.1 (85.7 – 94.6)

0.39

 4

146

88.0 (83.4 – 92.7)

0.83

 5

145

87.6 (83.4 – 91.9)

0.92

0.92

Vitamin D–total**

 1

145

79.9 (75.3 – 84.6)

Ref.

 2

146

86.0 (81.8 – 90.2)

0.06

 3

145

90.9 (86.2 – 95.7)

0.001

 4

146

93.5 (89.2 – 97.8)

<0.001

 5

145

90.9 (86.7 – 95.0)

0.001

<0.001

Calcium–total**

 1

145

87.6 (82.8 – 92.3)

Ref.

 2

146

87.4 (83.2 – 91.7)

0.97

 3

145

89.4 (84.8 – 94.0)

0.59

 4

146

88.2 (83.6 – 92.8)

0.85

 5

145

88.8 (84.7 – 92.9)

0.70

0.97