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Development, validation, and use of a semi-quantitative food frequency questionnaire for assessing protein intake in Papua New Guinean Highlanders.
- Source :
-
American journal of human biology : the official journal of the Human Biology Council [Am J Hum Biol] 2015 May-Jun; Vol. 27 (3), pp. 349-57. Date of Electronic Publication: 2014 Nov 03. - Publication Year :
- 2015
-
Abstract
- Objectives: The aim of this article was to develop a semi-quantitative food frequency questionnaire (FFQ) and evaluate its validity to estimate habitual protein intake, and investigate current dietary protein intakes of Papua New Guinea (PNG) Highlanders.<br />Methods: A 32-item FFQ was developed and tested among 135 healthy male and female volunteers. The FFQ-estimated daily total and animal protein intakes were compared with biomarkers and 3-day Weighed Food Records (WFR) by correlation analyses, Bland-Altman plot analyses and joint classification analyses.<br />Results: The FFQ-estimated total protein intake significantly correlated with urinary nitrogen in the first morning void after adjusting urinary creatinine concentration (r = 0.28, P < 0.01) and the FFQ-estimated animal protein intake significantly correlated with the hair δ(15) N (Spearman's r = 0.34, P < 0.001). The limits of agreement were ±2.39 Z-score residuals for total protein intake and ±2.19 Z-score for animal protein intake, and intra-individual differences increased as protein intake increased. The classification into the same and adjacent quartiles was 66.0% for total protein intake and 73.6% for animal protein intake. Median daily total and animal protein intake estimates from the FFQ and the 3-day WFR showed a good agreement with differences of 0.2 and 4.9 g, respectively. None of the studied communities in the PNG Highlands met the biologically required protein intake; although the community closer to an urban center showed higher protein intake than the more remote communities.<br />Conclusions: The newly developed 32-item FFQ for PNG Highlanders is applicable for evaluation of protein intake at the individual level. Am. J. Hum. Biol. 27:349-357, 2015. © 2014 Wiley Periodicals, Inc.<br /> (© 2014 Wiley Periodicals, Inc.)
Details
- Language :
- English
- ISSN :
- 1520-6300
- Volume :
- 27
- Issue :
- 3
- Database :
- MEDLINE
- Journal :
- American journal of human biology : the official journal of the Human Biology Council
- Publication Type :
- Academic Journal
- Accession number :
- 25367668
- Full Text :
- https://doi.org/10.1002/ajhb.22647