Development and relative validation of a short food frequency questionnaire for assessing dietary intakes of non-alcoholic fatty liver disease patients.

Spearman’s correlations between the two dietary assessment instruments were moderate and highly significant for fruit ( r = 0.5123, P = 0.0001), fat ( r = 0.4326, P = 0.0010) and sugar ( r = 0.4079, P = 0.0020); while the vegetable measurement was more variable ( r = 0.3983, P = 0.0026).

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