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The 2014 questionnaire has questions of 127 food and beverage items, plus additional questions to adjust for fat, protein, carbohydrate, sugar, and whole grain content. [33] NHANES [9] National Cancer Institute Pen-and-paper version mailed to large numbers of respondents periodically. Results are used as comparison baselines for other FFQs.
The National Health and Nutrition Examination Survey (NHANES) is a survey research program conducted by the National Center for Health Statistics (NCHS) to assess the health and nutritional status of adults and children in the United States, and to track changes over time. [1] The survey combines interviews, physical examinations and laboratory ...
Since the results of a 24-hour diet recall are not representative, it is not a good stand-alone method and should be utilized with other methods, such as food frequency questionnaires. [1] A 24-hour diet recall cannot account for day-to-day variation, and so should be administered multiple times to be useful. [ 3 ]
During her time at the National Cancer Institute (1982 to 1991), Block developed a semi-quantitative food frequency questionnaire (FFQ) that would later come to be known as the Block FFQ. [4] The approach to questionnaire design was first described in a paper co-authored with Hartman, Dresser, Carroll, Gannon, and Gardner in 1986. [ 5 ]
There is compelling evidence that food frequency questionnaires and other methods that rely on human memory do not accurately measure dietary intake. [31] An analysis of the validity of the methods used by the USDA to estimate per capita calorie consumption found that these methods lack validity and the authors of this study recommend that ...
According to the U.S. Department of Agriculture, based on NHANES 2013–2014 surveys, women ages 20 and up consume on average 6.8 grams/day and men consume on average 15.5 grams/day. [92] Ignoring the non-alcohol contribution of those beverages, the average ethanol calorie contributions are 48 and 108 cal/day.
The General Food Cravings Questionnaires (G-FCQs) are the Dutch translation of the FCQs. The G-FCQ-T includes 21 of the original FCQ-T's 39 items and the G-FCQ-S has (similar to the FCQ-S) 15 items but references to "one or more specific foods" were replaced by "something tasty". [ 16 ]
Over time, the study expanded. Most notably, a dietary questionnaire was added in 1980 due to investigators recognizing the impact of diet and nutrition on the development of chronic disease. Blood, urine, saliva, and other physical samples were received and tested beginning in 1982. [5]