Figure 1.

Boxplots of eGFR based on different estimating equations for men and women in different age groups (values lower than 60 ml/min/1.73 m2 indicating chronic kidney disease stages 3–5; + denoting mean values).

Rothenbacher et al. BMC Public Health 2012 12:343   doi:10.1186/1471-2458-12-343
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