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. Author manuscript; available in PMC: 2010 Dec 1.
Published in final edited form as: Atherosclerosis. 2009 Jun 6;207(2):585–590. doi: 10.1016/j.atherosclerosis.2009.05.030

Table 2.

Characteristics of participants according to quintiles (Q) 1, 3, and 5 of 25-hydroxyvitamin D [25(OH)D], 1,25-dihydroxyvitamin D [l,25(OH)2D], and parathyroid hormone concentration: Rancho Bernardo, CA, 1997–1999.

25(OH)D (ng/mL)
l,25(OH)2D (ng/L)
Parathyroid hormone (ng/L)
Q1
(<32.0)
Q3
(38.0–43.0)
Q5
(>49.0)
Ptrend Q1
(<20.0)
Q3
(27.0–34.0)
Q5
(>42.0)
Ptrend Q1
(<34.0)
Q3
(42.0–50.0)
Q5
(>64.0)
Ptrend
No. 119 148 137 -- 126 148 138 -- 129 128 133 --
Age, years 77.8 76.0 73.7 < 0.001 77.4 74.1 74.4 0.006 75.4 74.4 75.5 0.185
Men, (%) 21.0 39.2 41.6 < 0.001 39.8 35.8 28.3 0.033 32.6 38.6 34.6 0.468
Body mass index, kg/m2 26.6 25.8 25.0 0.027 24.7 25.8 25.6 0.213 25.2 25.2 26.6 0.005
Waist-to-hip ratio 0.862 0.880 0.875 0.075 0.885 0.874 0.858 0.012 0.867 0.880 0.875 0.332
Alcohol intake, g/wk 50.7 53.8 91.5 < 0.001 53.6 66.5 72.5 0.038 65.9 64.8 64.0 0.772
Current smoker, (%) 5.0 2.7 5.1 0.942 4.4 4.1 3.6 0.462 8.5 2.3 3.8 0.083
Exercise > 3 times/wk, (%) 58.8 75.0 83.2 < 0.001 75.2 77.0 80.4 0.146 82.2 70.5 67.7 < 0.001
Calcium supplement user, (%) 39.0 44.6 50.4 0.040 49.1 46.6 43.5 0.354 59.7 43.2 39.1 < 0.001
Vitamin D supplement user, (%) 14.4 24.3 29.9 0.010 22.3 25.7 20.3 0.352 34.1 16.7 24.8 0.037
Systolic BP, mmHg 142.8 134.0 136.5 0.044 140.0 134.3 136.6 0.148 137.8 134.7 136.9 0.593
Diastolic BP, mmHg 74.5 73.2 74.5 0.567 73.8 74.8 74.5 0.594 73.0 75.3 74.4 0.521
Hypertension, (%) 63.9 56.8 62.0 0.830 64.6 50.0 58.7 0.525 62.0 59.9 64.7 0.289
Fasting glucose, mg/dL 106.2 102.8 101.9 0.123 104.8 105.3 100.8 0.066 100.8 105.8 107.1 0.111
Diabetes, (%) 13.5 9.5 8.8 0.209 14.2 12.8 8.7 0.248 7.0 9.9 14.3 0.078
Total cholesterol:HDL ratio 3.702 3.782 3.613 0.783 3.898 3.695 3.606 0.037 3.623 3.685 3.948 0.045
eGFR, ml/min per 1.73 m2 73.5 73.3 73.9 0.669 67.6 76.4 76.8 < 0.001 72.9 74.7 72.8 0.748

Values presented are the mean unless otherwise indicated.

BP indicates blood pressure; eGFR, estimated glomerular filtration rate.