Validation of salt intake measurements: comparisons of a food record checklist and spot-urine collection to 24-h urine collection.

ABSTRACT:

Objective

Monitoring population salt intake is operationally and economically challenging. We explored whether a questionnaire assessment and a prediction of Na intake from spot-urine could replace or complement the recommended measurement of Na in 24-h urine (24-h U).

Design

Compare the agreement of a Na-specific food record checklist (FRCL) and a late-afternoon spot-urine measurement (PM-spot) with 24-h U measurement in estimating Na intake at group level. Each participant's use of these methods extended over 3 d. Agreement was assessed using mean (95 % CI) differences, linear regression models and Bland-Altman plots.

Setting

The validation study was part of a 1-year workplace intervention trial to lower salt intake in Switzerland.

Participants

Seventy women

SUBMITTER: Beer-Borst S 

PROVIDER: S-EPMC7613718 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature