ffq_sum_scores
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ffq_sum_scores [2021/07/29 16:29] simone |
ffq_sum_scores [2021/11/25 11:43] trynke |
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| A Food Frequency Questionnaire consists of a foodlist with a frequency response section for subjects to report how often each item was consumed over a specified period of time (in this case: one month). Data collection is therefore retrospective. From the answers given in a FFQ, nutrient intake can be estimated by calculations made with computerized software programs that multiply the reported frequency of each food item by the amount of nutrient in a serving of that food. A reference database is used to establish the nutrient content of each food item. FFQ data are assumed to be representative of habitual intake and can be used to rank individuals according to intake. | A Food Frequency Questionnaire consists of a foodlist with a frequency response section for subjects to report how often each item was consumed over a specified period of time (in this case: one month). Data collection is therefore retrospective. From the answers given in a FFQ, nutrient intake can be estimated by calculations made with computerized software programs that multiply the reported frequency of each food item by the amount of nutrient in a serving of that food. A reference database is used to establish the nutrient content of each food item. FFQ data are assumed to be representative of habitual intake and can be used to rank individuals according to intake. | ||
| - | LifeLines participants aged 18 years and older complete four questionnaires on their food intake: one main questionnaire at baseline to estimate energy and macronutrient intake and three questionnaires on specific (micro)nutrients, i.e. a questionnaire on b-vitamins (questionnaire A), one on fatty acids (questionnaire B), and a vitamin ACE questionnaire (questionnaire C). The information from the questionnaires on specific nutrients can only be interpreted by combining this information with the information from the main questionnaire at baseline. | + | Lifelines participants aged 18 years and older complete four questionnaires on their food intake: one main questionnaire at baseline to estimate energy and macronutrient intake and three questionnaires on specific (micro)nutrients, i.e. a questionnaire on b-vitamins (questionnaire A), one on fatty acids (questionnaire B), and a vitamin ACE questionnaire (questionnaire C). The information from the questionnaires on specific nutrients can only be interpreted by combining this information with the information from the main questionnaire at baseline. |
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ffq_sum_scores.txt ยท Last modified: 2024/01/29 12:44 by laura
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