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ffq [2021/03/10 16:02]
trynke
ffq [2022/01/05 10:44] (current)
laura [Papers using Lifelines FFQ data]
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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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 {{:​ffq_corrected.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 =====
ffq.1615388532.txt.gz · Last modified: 2021/03/10 16:02 by trynke