Median bias in predicting selected percentiles ( @th , @th , @th , @th , @th ) of usual @-h sodium excretion with one-void urines ranged from -@ to @ mg ( -@ to @ % of the observed usual excretions ) for men and -@ to @ mg ( -@ to @ % ) for women , and with two-void urines from -@ to @ mg ( -@ to @ % ) and -@ to @ mg ( -@ to @ % ) , respectively .