How to obtain measures of population-level sodium intake in 24-hour urine samples: protocol (2021)

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Primary aims of the study
  • estimate the average intake of dietary salt in men and women in the age stratum 18–69 through measurement of 24-hour urinary sodium excretion;
  • provide information for designing and implementing interventions aimed at reducing population-level dietary salt;
  • determine subsequent estimates of salt intake in the same population to assist monitoring intake over time; and
  • provide trends in salt intake against which to monitor and evaluate the effectiveness of interventions aimed at population-level dietary salt reduction.
Intended audience

The protocol is primarily intended for principal investigator(s) of studies of sodium, potassium and iodine intake. Parts of the manual are also intended for field staff who may interact with survey participants.