Table 1.

Mean (SD) of study population characteristics

Characteristic	Women (n = 826)	Men (n = 801)
Age, years	58.1 (3.9)	58.0 (3.8)
Weight, kg	72.5 (12.3)	87.2 (12.4)
Height, cm	164.5 (6.0)	176.9 (6.2)
Body mass index, kg/m2	26.8 (4.4)	27.8 (3.5)
Plasma creatinine
mmol/L	59.80 (9.40)	74.50 (10.80)
mg/dl	0.67 (0.10)	0.84 (0.12)
Plasma cystatin C, mg/L	0.79 (0.11)	0.80 (0.11)
Measured GFR, ml/min per 1.73 m2	87.8 (14.0)	95.7 (13.7)
Estimated GFR, ml/min per 1.73 m2
MDRD equation	92.3 (17.1)	95.9 (15.7)
CKD-EPI equation	94.4 (10.0)	95.3 (9.0)
Rule's cystatin C equation	93.3 (17.9)	90.9 (15.8)