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To address limited food frequency questionnaire (FFQ) capacity in public health monitoring in Malaysia, we aimed to develop a semi-quantitative FFQ for an adult multiethnic population for comprehensive fatty acid (FA) profiling inclusive of saturated (SFA), monounsaturated (MUFA), polyunsaturated fatty acids (PUFA), PUFA:SFA ratio, trans fatty acids, omega-3 and omega-6 FAs. A 240-food itemed FFQ used diet records (DR) of Malaysia Lipid Study (MLS) participants and fatty acid composition database from laboratory analyzed foods. The developed MLS-FFQ underwent face and content validation before relative validation in a free-living population ( n = 114). Validation was facilitated for macronutrient data comparisons between DR and FFQ via Spearman's correlation coefficient analyses; and for fatty acid composition data by independent pairing of DR, FFQ and plasma triglyceride using the triads method. Moderate correlation between dietary methods was obtained for macronutrients and FAs ( r = 0.225-0.457, p &lt; 0.05) except for ω-3 FAs, presenting good agreement with grossly misclassified nutrients &lt;10%. For fatty acid composition data, the magnitude of validity coefficients ( z ) for SFA, PUFA, PUFA:SFA ratios and ω-6 FAs by all 3 methods were not significantly different ( p &gt; 0.05). In conclusion, the MLS-FFQ was shown to be a valid tool to assess population dietary intakes.

nutrients

Providing Comprehensive Dietary Fatty Acid Profiling from Saturates to Polyunsaturates with the Malaysia Lipid Study-Food Frequency Questionnaire: Validation Using the Triads Approach