Estimating population level 24-h sodium excretion using spot urine samples in older adults in rural South Africa.

ABSTRACT:

Background

South Africa has introduced regulations to reduce sodium in processed foods. Assessing salt consumption with 24-h urine collection is logistically challenging and expensive. We assess the accuracy of using spot urine samples to estimate 24-h urine sodium (24hrUNa) excretion at the population level in a cohort of older adults in rural South Africa.

Methods

24hrUNa excretion was measured and compared to that estimated from matched spot urine samples in 399 individuals, aged 40-75 years, from rural Mpumalanga, South Africa. We used the Tanaka, Kawasaki, International Study of Sodium, Potassium, and Blood Pressure (INTERSALT), and Population Mean Volume (PMV) method to predict 24hrUNa at the individual and population level.

Results

The population median 24hrUNa

SUBMITTER: Du Toit JD 

PROVIDER: S-EPMC10198169 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature