Validity of predictive equations for 24-h urinary sodium excretion in adults aged 18-39 y.

ABSTRACT:

Background

Collecting a 24-h urine sample is recommended for monitoring the mean population sodium intake, but implementation can be difficult.

Objective

The objective was to assess the validity of published equations by using spot urinary sodium concentrations to predict 24-h sodium excretion.

Design

This was a cross-sectional study, conducted from June to August 2011 in metropolitan Washington, DC, of 407 adults aged 18-39 y, 48% black, who collected each urine void in a separate container for 24 h. Four timed voids (morning, afternoon, evening, and overnight) were selected from each 24-h collection. Published equations were used to predict 24-h sodium excretion with spot urine by specimen timing and race-sex subgroups. We examined mean differences with measured 24-

SUBMITTER: Cogswell ME 

PROVIDER: S-EPMC3831536 | biostudies-literature | 2013 Dec

REPOSITORIES: biostudies-literature