Biomonitoring involves the assessment of human or animal populations by measuring organic or biological compounds or their metabolites in the body fluids or tissues of individuals in those populations ...
Monitoring population sodium intake using spot urine samples: validation in a New Zealand population
Although 24-h urine collection is widely considered the ’gold standard’ for estimation of population sodium intake, spot urine collection is increasingly used as a convenient and affordable ...
Pew Research Center designed this study to assess the current state of online survey sampling methods – both probability-based and opt-in – and determine their accuracy on general population estimates ...
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