Tags

Type your tag names separated by a space and hit enter

Relative validity of a food frequency questionnaire for pregnant women.
Can J Diet Pract Res. 2011 Summer; 72(2):60-9.CJ

Abstract

PURPOSE

Pregnant women's diets should be monitored to ensure adequacy, but few studies have assessed the validity of dietary assessment tools among pregnant women. We examined the relative validity of a self-administered, semiquantitative food frequency questionnaire (FFQ) adapted for use in the International Trial of Antioxidants in the Prevention of Preeclampsia for assessing usual diet during pregnancy.

METHODS

A subsample (n=107) was recruited for the FFQ validation study, and provided three days of nonconsecutive three-day food records (3D-FRs) following completion of the FFQ.

RESULTS

Mean ± standard deviation (median) energy intakes (kcal/kJ) from the FFQ and mean of 3D-FRs were 1963 ± 610 (1860)/8219 ± 2554 (7787) and 2320 ± 607 (2354)/9713 ± 2541 (9856), respectively. Spearman correlation coefficients between unadjusted FFQ and 3D-FRs nutrients were positive (rS ranged from 0.17 for iron to 0.49 for folate) and were generally statistically significant (0.05<p<0.01). Most energy-adjusted correlations were less robust. Cross-classification of energy and 24 nutrients from the FFQ and means of the 3D-FRs placed 35% of them into identical quartiles and 75% into identical and contiguous quartiles; only 6% were frankly misclassified. Bland-Altman plots showed acceptable agreement between the two instruments.

CONCLUSIONS

These results suggest that the FFQ is a relatively valid instrument for determining usual diet in pregnant women.

Authors+Show Affiliations

Département de nutrition, Université de Montréal, and Centre de recherche, Institut universitaire de gériatrie de Montréal, Montreal, QC, Canada.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Randomized Controlled Trial
Research Support, Non-U.S. Gov't
Validation Study

Language

eng

PubMed ID

21645424

Citation

Shatenstein, Bryna, et al. "Relative Validity of a Food Frequency Questionnaire for Pregnant Women." Canadian Journal of Dietetic Practice and Research : a Publication of Dietitians of Canada = Revue Canadienne De La Pratique Et De La Recherche En Dietetique : Une Publication Des Dietetistes Du Canada, vol. 72, no. 2, 2011, pp. 60-9.
Shatenstein B, Xu H, Luo ZC, et al. Relative validity of a food frequency questionnaire for pregnant women. Can J Diet Pract Res. 2011;72(2):60-9.
Shatenstein, B., Xu, H., Luo, Z. C., & Fraser, W. (2011). Relative validity of a food frequency questionnaire for pregnant women. Canadian Journal of Dietetic Practice and Research : a Publication of Dietitians of Canada = Revue Canadienne De La Pratique Et De La Recherche En Dietetique : Une Publication Des Dietetistes Du Canada, 72(2), 60-9. https://doi.org/10.3148/72.2.2011.60
Shatenstein B, et al. Relative Validity of a Food Frequency Questionnaire for Pregnant Women. Can J Diet Pract Res. 2011;72(2):60-9. PubMed PMID: 21645424.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Relative validity of a food frequency questionnaire for pregnant women. AU - Shatenstein,Bryna, AU - Xu,Hairong, AU - Luo,Zhong-Cheng, AU - Fraser,William, PY - 2011/6/8/entrez PY - 2011/6/8/pubmed PY - 2011/9/29/medline SP - 60 EP - 9 JF - Canadian journal of dietetic practice and research : a publication of Dietitians of Canada = Revue canadienne de la pratique et de la recherche en dietetique : une publication des Dietetistes du Canada JO - Can J Diet Pract Res VL - 72 IS - 2 N2 - PURPOSE: Pregnant women's diets should be monitored to ensure adequacy, but few studies have assessed the validity of dietary assessment tools among pregnant women. We examined the relative validity of a self-administered, semiquantitative food frequency questionnaire (FFQ) adapted for use in the International Trial of Antioxidants in the Prevention of Preeclampsia for assessing usual diet during pregnancy. METHODS: A subsample (n=107) was recruited for the FFQ validation study, and provided three days of nonconsecutive three-day food records (3D-FRs) following completion of the FFQ. RESULTS: Mean ± standard deviation (median) energy intakes (kcal/kJ) from the FFQ and mean of 3D-FRs were 1963 ± 610 (1860)/8219 ± 2554 (7787) and 2320 ± 607 (2354)/9713 ± 2541 (9856), respectively. Spearman correlation coefficients between unadjusted FFQ and 3D-FRs nutrients were positive (rS ranged from 0.17 for iron to 0.49 for folate) and were generally statistically significant (0.05<p<0.01). Most energy-adjusted correlations were less robust. Cross-classification of energy and 24 nutrients from the FFQ and means of the 3D-FRs placed 35% of them into identical quartiles and 75% into identical and contiguous quartiles; only 6% were frankly misclassified. Bland-Altman plots showed acceptable agreement between the two instruments. CONCLUSIONS: These results suggest that the FFQ is a relatively valid instrument for determining usual diet in pregnant women. SN - 1486-3847 UR - https://www.unboundmedicine.com/medline/citation/21645424/Relative_validity_of_a_food_frequency_questionnaire_for_pregnant_women_ L2 - https://dcjournal.ca/doi/10.3148/72.2.2011.60?url_ver=Z39.88-2003&amp;rfr_id=ori:rid:crossref.org&amp;rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -