Repeatability of food frequency assessment tools in relation to the number of items and response categories included
Background: Accuracy of a measurement is a cornerstone in research in order to make robust conclusions about the research hypothesis. Objective: To examine whether the number of items (questions) and the number of responses of consumption included in nutritional assessment tools influence their r...
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| Format: | info:eu-repo/semantics/article |
| Language: | eng |
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International Nutrition Foundation
2013
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| Online Access: | https://hdl.handle.net/10171/31942 |
| _version_ | 1793399988295827456 |
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| author | Bountziouka, V. (Vassiliki) Bathrellou, E. (Eirini) Zazpe, I. (Itziar) Ezquer, L. (Leyre) Martinez-Gonzalez, M.A. (Miguel Ángel) Panagiotakos, D.B. (Demosthenes B.) |
| author_facet | Bountziouka, V. (Vassiliki) Bathrellou, E. (Eirini) Zazpe, I. (Itziar) Ezquer, L. (Leyre) Martinez-Gonzalez, M.A. (Miguel Ángel) Panagiotakos, D.B. (Demosthenes B.) |
| author_sort | Bountziouka, V. (Vassiliki) |
| collection | DSpace |
| description | Background: Accuracy of a measurement is a cornerstone in research in order to make robust
conclusions about the research hypothesis. Objective: To examine whether the number of items
(questions) and the number of responses of consumption included in nutritional assessment tools
influence their repeatability. Methods: During 2009, 400 participants (250 from Greece, 37±13
yrs, 34% males and 150 participants from Spain, 39±17 yrs, 41% males) completed a diet index
with 11-items and binary (yes/no) responses, a diet-index with 11-items and 6-scale responses, a
36-item and a 76-item food frequency questionnaire (FFQ) with 6-scale responses. Participants
completed these tools, twice, within 15-days period. Spearman-Brown (rsb), Kendall’s tau
coefficients and the Bland-Altman method were applied to answer the research hypothesis.
Results: The highest repeatability coefficient was observed for the 11-items with binary
responses index (rsb=0.948, p<0.001), followed by the 11-items with 6-scale responses index
(rsb=0.943, p<0.001), the 36-item (rsb=0.936, p<0.001) and the 76-item FFQs (rsb=0.878,
p<0.001). Statistical comparisons revealed no significant differences between repeatability
coefficients of the first three tools (p>0.23); whereas the aforementioned tools had significantly
higher repeatability coefficients as compared with the 76-item FFQ (p=0.002). Sub-group
analyses by gender, education, smoking and clinical status, confirmed the aforementioned
results. Conclusion: Repeatability has been revealed for all food frequency assessment tools
used, irrespective of the number of items or the number of responses included. |
| format | info:eu-repo/semantics/article |
| id | oai:dadun.unav.edu:10171-31942 |
| institution | Universidad de Navarra |
| language | eng |
| publishDate | 2013 |
| publisher | International Nutrition Foundation |
| record_format | dspace |
| spelling | oai:dadun.unav.edu:10171-319422022-06-29T09:41:37Z Repeatability of food frequency assessment tools in relation to the number of items and response categories included Bountziouka, V. (Vassiliki) Bathrellou, E. (Eirini) Zazpe, I. (Itziar) Ezquer, L. (Leyre) Martinez-Gonzalez, M.A. (Miguel Ángel) Panagiotakos, D.B. (Demosthenes B.) Assessment tools Accuracy Repeatability Methodology Background: Accuracy of a measurement is a cornerstone in research in order to make robust conclusions about the research hypothesis. Objective: To examine whether the number of items (questions) and the number of responses of consumption included in nutritional assessment tools influence their repeatability. Methods: During 2009, 400 participants (250 from Greece, 37±13 yrs, 34% males and 150 participants from Spain, 39±17 yrs, 41% males) completed a diet index with 11-items and binary (yes/no) responses, a diet-index with 11-items and 6-scale responses, a 36-item and a 76-item food frequency questionnaire (FFQ) with 6-scale responses. Participants completed these tools, twice, within 15-days period. Spearman-Brown (rsb), Kendall’s tau coefficients and the Bland-Altman method were applied to answer the research hypothesis. Results: The highest repeatability coefficient was observed for the 11-items with binary responses index (rsb=0.948, p<0.001), followed by the 11-items with 6-scale responses index (rsb=0.943, p<0.001), the 36-item (rsb=0.936, p<0.001) and the 76-item FFQs (rsb=0.878, p<0.001). Statistical comparisons revealed no significant differences between repeatability coefficients of the first three tools (p>0.23); whereas the aforementioned tools had significantly higher repeatability coefficients as compared with the 76-item FFQ (p=0.002). Sub-group analyses by gender, education, smoking and clinical status, confirmed the aforementioned results. Conclusion: Repeatability has been revealed for all food frequency assessment tools used, irrespective of the number of items or the number of responses included. 2013-09-30T14:51:17Z 2013-09-30T14:51:17Z 2012 info:eu-repo/semantics/article https://hdl.handle.net/10171/31942 eng http://nsinf.publisher.ingentaconnect.com/content/nsinf/fnb/2012/00000033/00000004/art00009 info:eu-repo/semantics/openAccess application/pdf International Nutrition Foundation |
| spellingShingle | Assessment tools Accuracy Repeatability Methodology Bountziouka, V. (Vassiliki) Bathrellou, E. (Eirini) Zazpe, I. (Itziar) Ezquer, L. (Leyre) Martinez-Gonzalez, M.A. (Miguel Ángel) Panagiotakos, D.B. (Demosthenes B.) Repeatability of food frequency assessment tools in relation to the number of items and response categories included |
| title | Repeatability of food frequency assessment tools in relation to the number of items and response categories included |
| title_full | Repeatability of food frequency assessment tools in relation to the number of items and response categories included |
| title_fullStr | Repeatability of food frequency assessment tools in relation to the number of items and response categories included |
| title_full_unstemmed | Repeatability of food frequency assessment tools in relation to the number of items and response categories included |
| title_short | Repeatability of food frequency assessment tools in relation to the number of items and response categories included |
| title_sort | repeatability of food frequency assessment tools in relation to the number of items and response categories included |
| topic | Assessment tools Accuracy Repeatability Methodology |
| url | https://hdl.handle.net/10171/31942 |
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