Fat and fibre behaviour questionnaire: Reliability, relative validity and responsiveness to change in Australian adults with type 2 diabetes and/or hypertension

Reeves, Marina M., Winkler, Elisabeth A. H. and Eakin, Elizabeth G. (2015) Fat and fibre behaviour questionnaire: Reliability, relative validity and responsiveness to change in Australian adults with type 2 diabetes and/or hypertension. Nutrition and Dietetics, 72 4: 368-376. doi:10.1111/1747-0080.12160


Author Reeves, Marina M.
Winkler, Elisabeth A. H.
Eakin, Elizabeth G.
Title Fat and fibre behaviour questionnaire: Reliability, relative validity and responsiveness to change in Australian adults with type 2 diabetes and/or hypertension
Journal name Nutrition and Dietetics   Check publisher's open access policy
ISSN 1446-6368
1747-0080
Publication date 2015-01-01
Year available 2015
Sub-type Article (original research)
DOI 10.1111/1747-0080.12160
Open Access Status DOI
Volume 72
Issue 4
Start page 368
End page 376
Total pages 9
Place of publication Richmond, VIC Australia
Publisher Wiley-Blackwell Publishing Asia
Collection year 2015
Language eng
Formatted abstract
Aim
The aim of this study was to assess the test–retest reliability, relative validity and responsiveness to change of a 20-item fat and fibre behaviour questionnaire (FFBQ) compared with a semi-quantitative food frequency questionnaire (FFQ).

Methods
Four hundred thirty-four primary care patients with type 2 diabetes and/or hypertension were randomised to lifestyle intervention or usual care. Data (FFBQ and FFQ) were collected at baseline and 4 months follow-up. A subset of usual care participants (n = 27) completed the FFBQ 2 weeks after baseline. FFQ-measured nutrients included total and saturated fat (percentage of energy; energy-adjusted grams) and fibre (crude grams; energy-adjusted grams). The FFBQ was scored as a total, fat and fibre index. Test–retest reliability was assessed by intra-class correlations (ICCs); relative validity by Pearson's correlations between the FFBQ and FFQ; and responsiveness (mean change in intervention group divided by SD of usual care group change).

Results
Test–retest ICCs (95% CI) were 0.87 (0.62, 0.95) for total index, 0.87 (0.69, 0.95) for fat index and 0.89 (0.69, 0.95) for fibre index. Pearson's correlations for fat index ranged from −0.50 to −0.54, and for fibre index from 0.42 to 0.56. Total index had correlations of 0.5–0.6 (or −0.5 to −0.6) with all FFQ-measured nutrients except crude fibre. The fat index showed similar responsiveness compared with FFQ-measured fat intake while the fibre index was significantly more responsive than FFQ-measured fibre.

Conclusions
The FFBQ may provide a suitable alternative or adjunct to FFQs for use in intervention trials in adults with chronic diseases, because of its ability to detect changes in dietary behaviours.
Keyword Dietary intake
Food pattern
Nutrition screening
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2016 Collection
School of Public Health Publications
 
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