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. Author manuscript; available in PMC: 2010 Jun 23.
Published in final edited form as: N Engl J Med. 2008 Aug 7;359(6):584–592. doi: 10.1056/NEJMoa0706130

Figure 1. Odds Ratios (and 95% CIs) for Death According to Quartile of C-Terminal Fibroblast Growth Factor 23 (cFGF-23) Levels.

Figure 1

Crude, case-mix adjusted, and multivariable adjusted odds ratios for death are shown according to quartile of cFGF-23 levels (quartile 1, <1090 reference units [RU] per milliliter; quartile 2, 1090 to 1750 RU per milliliter; quartile 3, 1751 to 4010 RU per milliliter; quartile 4, >4010 RU per milliliter). The case-mix adjusted analysis included the following variables: age, sex, race or ethnic group, blood pressure, body-mass index, facility-specific standardized mortality rate, vascular access at initiation of dialysis (fistula, graft, or catheter), cause of renal failure, urea reduction ratio, and coexisting conditions. The multivariable adjusted analysis included the case-mix variables plus phosphate, calcium, log parathyroid hormone, albumin, creatinine, and ferritin levels. Quartile 1 was the reference group in all models. I bars represent 95% confidence intervals. Asterisks indicate P<0.05. R denotes reference.