In Gallani (2020) study, it was found that sodium intake values from a FFQ were significantly and strongly connected to the 24-hour urine collection, with a correlation coefficient of 0.30, which is moderately significant; however, they have reported that the FFQ often underestimates the total intake by 2.3 g [ 39 ].
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Development and validation of food frequency questionnaire screener software for sodium intake among palestinian population.
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