Table 1.

Demographic and clinical characteristics of individuals studied

N	Female, 8	Male, 8	P-value, male vs. female	All 16
Age (year)*	70 (66–80)	72 (68–75)	0.52	71 (66–80)
Weight (kg)*	71 (56–91)	97 (75–112)	0.002	84 (56–112)
Serum creatinine (mg dl−1)†	0.8 (0.8, 0.9)	1.0 (0.9, 1.1)	0.0017	0.9 (0.9, 1.0)
Creatinine clearance (ml min−1)†‡	50 (44, 57)	67 (60, 73)	0.0044	58 (52, 65)

^*Mean (range).

^†Mean (95% confidence interval).

^‡Creatinine clearance calculated using the Cockcroft and Gault equation.