Comparing methods to assess dietary sodium intake in pregnancy
1987
Brown, M.A. | Prendergast, J.S. | Ross, M.R. | Gallery, E.D.M.
A research project was undertaken to determine whether in normal pregnant women, eating ad libitum, a close relationship exists between estimations of sodium intake based on weighed food recording and urinary sodium excretion methods, with the latter considered as the standard method for determining sodium intake; to determine the correlation between the two methods after dietary sodium alteration; and to assess mean sodium intake during normal pregnancy. Results demonstrated that population sodium intake assessed by weighed food recording for 48 hours was the same as that assessed by a 24-hour urinary sodium excretion; significant differences were present for individual subjects. The mean daily sodium intakes in the population were 112 mmol and 102 mmol in the second and third trimesters, respectively. Assessment of mean daily sodium intake in pregnant women demonstrated that 2-day weighed food recording provides as accurate a method as urine sodium excretion for assessing group sodium intake on an ad libitum, but not during a manipulated, sodium diet.
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