Dear Research community:
I am conducting a validation of a FFQ against 3 days 24h recalls and I need help with the nutrient content of the lines of the FFQ that represent multiple foods.
For example, the line representing Pizza consumption must contain the vegetarian, with chicken topping or meat topping types of pizza. Such information is usually extracted from prior surveys conducted on the population of interest, from national surveys.
In my study, I initially used data of a 1 day 24h recall nationwide survey done some years ago. This survey however was conducted only on women and children. Moreover, the data generated from this survey is not subtle enough as there is no Food composition table for the composite foods specific to the country so other food composition tables of neighboring countries were used. Although the data from this original survey can provide an idea on the most frequent foods to compile in one specific line of the FFQ, would it be possible to use the data from the 3 days 24h recalls that I conducted to validate the FFQ.
For example, the frequency of consumption of different types of Pizza (Vegetarian, with chicken topping or meat topping) is available in the 3 days 24h recalls survey conducted for the validation of the FFQ, but not in the 1 day survey conducted nationwide. Is it feasible to use the 3 days 24h recall data to inform the different foods to include in the lines of the FFQ that represent many foods? I have not encountered a similar situation in the literature.
Thank you, research community for any insight.
There is a growing debate over the validity and value of data derived from memory-based dietary assessment methods (M-BMs) such as FFQs and 24HRs. My empirically supported position is that all forms of M-BMs are pseudo-scientific, produce physiologically implausible data, and should not be used in nutrition research.
Please see the recent 'Controversy & Debate' Series in the Journal of Clinical Epidemiology for details:
Archer E, Marlow ML, Lavie CJ. The Fatal Flaws of Food Frequency Questionnaires and Other Memory-Based Dietary Assessment Methods. Journal of Clinical Epidemiology. 2018.
Link: Article Controversy and Debate: Memory based Methods Paper 1: The Fa...
Archer E, Marlow ML, Lavie CJ. Controversy and Debate: Memory-Based Dietary Assessment Methods Paper #3. Journal of Clinical Epidemiology. 2018.
Link: Article Controversy and Debate: Memory-Based Dietary Assessment Meth...
Thank you Dr. Archer for your response,
I totally agree with you that memory based dietary assessment methods are flawed, however, when working with a population that is not motivated to make food records, I had to compromise by trying to limit errors as much as possible: By having images of the same foods eaten by the population, using the multiple pass method and using multiple 24h recalls. Some participants had pictures of the food eaten the day before so that also was helpful. I believe that the use of new technologies with instant dietary recording (like the e-button) is the future of dietary assessment and they don’t even need validation. I would concentrate my efforts only towards that kind of technology if I work on dietary assessment projects in the future.
However, that is another debate. For my PhD project (validation of a FFQ against 24h recalls), having an expert advice on the population to use for filling the multiple foods line of a FFQ is my concern of the day.
Thanking you
Best wishes
Najoua
- Badges
- Science topic
- Similar topics
- Instrumentation Engineering
- Instruments