Premium
Polyunsaturated fatty acid food frequency questionnaire validation in people with end stage renal disease on dialysis
Author(s) -
Roach Lauren A.,
Russell Kenneth G.,
Lambert Kelly,
Holt Jane L.,
Meyer Barbara J.
Publication year - 2020
Publication title -
nutrition and dietetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.479
H-Index - 31
eISSN - 1747-0080
pISSN - 1446-6368
DOI - 10.1111/1747-0080.12483
Subject(s) - polyunsaturated fatty acid , docosahexaenoic acid , docosapentaenoic acid , eicosapentaenoic acid , medicine , biomarker , arachidonic acid , reproducibility , fatty acid , chemistry , chromatography , biochemistry , enzyme
Aim To validate the polyunsaturated food frequency questionnaire (PUFA FFQ) and test for reproducibility in people with end stage renal disease on dialysis treatment. Methods Participants (n = 32) completed the PUFA FFQ and three 24‐hour recalls. Erythrocyte samples (n = 29) were used for erythrocyte fatty acid analysis. The triangular relationship between the PUFA FFQ, 24‐hour recalls and the biomarker was assessed using the method of triads. Agreement between the two dietary methods was also assessed using Bland–Altman plots and classification by quintiles. Reproducibility was tested on a subset of the group (n = 8). Results The PUFA FFQ was a valid measure of all PUFA except for docosapentaenoic acid (DPA) and arachidonic acid (AA). Strong validity coefficients were found for n‐3 long‐chain PUFA (LCPUFA), eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) of 0.914 (95% CI: 0.665, 0.997) and 0.889 (95% CI: 0.706, 0.994), respectively. In the Bland–Altman plots 91–100% of observations fell between the limits of agreement for all PUFA. There were significant correlations between the initial FFQ and the repeat FFQ for all PUFA except DPA and AA. Conclusions The PUFA FFQ is a valid tool for assessing PUFA intake in people with end stage renal disease.