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. Author manuscript; available in PMC: 2009 Aug 11.
Published in final edited form as: Arch Intern Med. 2008 Aug 11;168(15):1629–1637. doi: 10.1001/archinte.168.15.1629

Figure 1.

Figure 1

Restricted cubic spline showing the fully adjusted associations between serum 25(OH)D levels and all-cause mortality in 13,331 participants of NHANES III. Knots are at 10.9, 20.5, 28.9 and 45.9 ng/ml. To convert to SI units (nmol/L), multiply 25(OH)D value by 2.496.