UNa is considered to be an objective indicator of dietary
sodium intake (Beich & Yancy 2008). To define the level of
adherence to a 3 g sodium intake as recommended by both
the HFSA (2006) and the ACC/AHA (Hunt et al. 2005),
urine sodium excretion in millimoles was converted to
milligram (mg = mmol · 22Æ99).