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ffq [2020/11/13 12:45] – trynkeffq [2025/02/05 13:49] (current) – external edit 127.0.0.1
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 Dietary intake of [[start|Lifelines]] participants aged 13 years and older was assessed with a food frequency questionnaire (FFQ) developed for Lifelines by the department of [[https://www.wur.nl/en/Research-Results/Chair-groups/Agrotechnology-and-Food-Sciences/Human-Nutrition-and-Health.htm|Human Nutrition and Health]] at WUR ([[sections|section]]: [[nutrition]]).\\ Dietary intake of [[start|Lifelines]] participants aged 13 years and older was assessed with a food frequency questionnaire (FFQ) developed for Lifelines by the department of [[https://www.wur.nl/en/Research-Results/Chair-groups/Agrotechnology-and-Food-Sciences/Human-Nutrition-and-Health.htm|Human Nutrition and Health]] at WUR ([[sections|section]]: [[nutrition]]).\\
 Children between 8-12 years old filled in a [[Children's diet (FFQ-TNO)|Child FFQ developed by TNO]].\\ Children between 8-12 years old filled in a [[Children's diet (FFQ-TNO)|Child FFQ developed by TNO]].\\
-In addition, children between 4-17 years old were asked a few general questions about their [[Children's diet (general)|diet/food intake]]\\ 
-The diet of [[infant diet (general)|newborns]] was assessed in the context of the birth cohort [[NEXT]]. 
  
 ^ Age:                                        ^ 0-1  ^ 4-7  ^ 8-12  ^ 13-17  ^ 18+  ^ ^ Age:                                        ^ 0-1  ^ 4-7  ^ 8-12  ^ 13-17  ^ 18+  ^
 | Flower FFQ                                  |      |      |       | x      | x    | | Flower FFQ                                  |      |      |       | x      | x    |
 | [[Children's diet (FFQ-TNO)|TNO FFQ]]       |      |      | x     |        |      | | [[Children's diet (FFQ-TNO)|TNO FFQ]]       |      |      | x     |        |      |
-| [[Children's diet (general)|General diet]]  |      | x    | x     | x      |      | 
-| [[Infant diet (general)|Infant diet]]       | x    |      |       |        |      | 
  
 ===== Background ===== ===== Background =====
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 Dietary intake of adolescent and adult Lifelines participants was assessed with a food frequency questionnaire (FFQ) that was specifically developed for Lifelines to assess dietary risk factors for a considerable number of diseases. Dietary intake of adolescent and adult Lifelines participants was assessed with a food frequency questionnaire (FFQ) that was specifically developed for Lifelines to assess dietary risk factors for a considerable number of diseases.
 Since this resulted in a long and time-consuming questionnaire, the questionnaire was divided into four parts and called the **Flower Food Frequency Questionnaire**.\\ Since this resulted in a long and time-consuming questionnaire, the questionnaire was divided into four parts and called the **Flower Food Frequency Questionnaire**.\\
 +For more information about the rationale for and validation of the flower FFQ see {{ :flower_ffq_nutrients.pdf |Brouwer-Brolsma et al. (2017)}} and {{ :brouwer-brolsma_2021.pdf |Brouwer-Brolsma et al. (2021)}}.\\
 +
 The questionnaire consists of one basic questionnaire, assessed at [[1A|baseline]]: **the heart** of the flower. It  covers energy and macronutrient intake and takes ~30 minutes to complete. The raw data from the heart FFQ were used to calculate [[FFQ sum scores|macronutrient sum scores]].\\ The questionnaire consists of one basic questionnaire, assessed at [[1A|baseline]]: **the heart** of the flower. It  covers energy and macronutrient intake and takes ~30 minutes to complete. The raw data from the heart FFQ were used to calculate [[FFQ sum scores|macronutrient sum scores]].\\
-The other three shorter questionnaires, **the petals**, were only used in adults and cover the (micro)nutrients: +The other three shorter questionnaires, **the petals**, were only used in adults and cover the (micro)nutrients (See Figure 1): 
-  * FFQ1 (Petal 1) contains 59 food items and is used to estimate the intake of different types of fatty acids and caffeine + 
-  * FFQ2 (Petal 2) consists of 61 food items and is used to estimate the intake of vitamin B2, B6, B11, 12, calcium and soy.  +  * FFQ1 (Petal 1) consists of 61 food items and is used to estimate the intake of vitamin B2, B6, B11, 12, calcium and soy.  
-  * FFQ3 (Petal 3) consists of 64 food items and is used to estimate the intake of vitamin A, C, E, and dietary fiber. See Figure 1.+  * FFQ2 (Petal 2) contains 59 food items and is used to estimate the intake of different types of fatty acids and caffeine 
 +  * FFQ3 (Petal 3) consists of 64 food items and is used to estimate the intake of vitamin A, C, E, and dietary fiber. 
  
 The Flower FFQ covers ≥96% of the absolute nutriënt intake and ≥93% of the between-person variability of each nutriënt as assessed in the Dutch National Food Consumption Survey from 1998. The Flower FFQ covers ≥96% of the absolute nutriënt intake and ≥93% of the between-person variability of each nutriënt as assessed in the Dutch National Food Consumption Survey from 1998.
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 NB: The three FFQ petals were randomly distributed to adult participants during the follow-up questionnaires [[1B]], [[1C]] and [[2A Questionnaire 1]], so that each participant received the petals in one of six possible orders ([1-2-3], [1-3-2], [2-1-3], [2-3-1], [3-1-2], or [3-2-1]). NB: The three FFQ petals were randomly distributed to adult participants during the follow-up questionnaires [[1B]], [[1C]] and [[2A Questionnaire 1]], so that each participant received the petals in one of six possible orders ([1-2-3], [1-3-2], [2-1-3], [2-3-1], [3-1-2], or [3-2-1]).
  
-{{:ffq_flower.png|}} +{{:ffq_corrected.png|}}
  
-For more information about the rationale for the flower FFQ see {{ :flower_ffq_nutrients.pdf |Brouwer-Brolsma et al. (2017)}} 
  
 ===== Papers using Lifelines FFQ data ===== ===== Papers using Lifelines FFQ data =====
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