Median bias in predicting selected percentiles ( 5th , 25th , 50th , 75th , 95th ) of usual 24-h sodium excretion with one-void urines ranged from -367 to 284 mg ( -7.7 to 12.2 % of the observed usual excretions ) for men and -604 to 486 mg ( -14.6 to 23.7 % ) for women , and with two-void urines from -338 to 263 mg ( -6.9 to 10.4 % ) and -166 to 153 mg ( -4.1 to 8.1 % ) , respectively .