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. 2012 Sep 13;7(9):e45112. doi: 10.1371/journal.pone.0045112

Table 1. Characteristics of the study sample.

Variable Value
Sample size 1,018
Age (years) 48 (41, 56)a
Male:Female 419:599
Percent African ancestry 82.0 (74.7, 87.5)
Serum creatinine (mg/dL) 0.9 (0.7, 1.0)
Glomerular filtration rate (mL/min/1.73 m2) 102.1 (86.7, 119.2)
Type 2 diabetes (prevalence) 15.6%
Hypertension (prevalence) 50.0%
a

Ranges are presented as median (first quartile, third quartile).