Mixed
Using gender-specific portion sizes (GS-PS) in food frequency questionnaires improves the accuracy of absolute nutrient intake estimates compared to using common portion sizes, but does not improve the accuracy of nutrient density estimates.
If you are tracking your absolute nutrient intake (e.g., total grams of protein or calories) using a food diary or app, using gender-specific portion estimates can improve accuracy. However, if you are tracking nutrient density (e.g., percentage of calories from fat or protein), using standard portion sizes is likely sufficient as gender-specific adjustments do not significantly change these ratios.
When intakes of energy and 15 nutrients were compared, absolute intakes calculated using the GS-PS were closer to intake levels of 24HDRs in both men and women. Using GS-PS did not affect intakes expressed as nutrient density or correlations between 24HDRs and the QFFQ.
Why this rating
Large sample size (n=2291), multi-ethnic cohort, use of 24-hour dietary recalls as a reference standard, and rigorous statistical analysis (bootstrapping, quintile classification).
Source
Considering Gender Differences in Portion Sizes to Improve the Accuracy of Nutrient Intakes from A Food Frequency Questionnaire
Minji Kang et al. · Nutrients · 2019
DOI 10.3390/nu11071449
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