upf_categorization
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| ====== Ultra-processed food categorization according to the NOVA classification ====== | ====== Ultra-processed food categorization according to the NOVA classification ====== | ||
| - | Researchers from the [[https://www.rug.nl/staff/m.duan/|University Medical Center Groningen]] developed the Ultra-processed food (UPF) categorization for adults according to the NOVA classification using the [[ffq_sum_scores|Food Frequency Questionnaire Sum scores from the heart of the FFQ flower (]]1a_questionnaire_2|1A Questionnaire 2]]). ([[sections]]: [[Nutrition]] and [[secondary & linked variables]]).\\ | + | Researchers from the [[https://www.rug.nl/staff/m.duan/|University Medical Center Groningen]] developed the Ultra-processed food (UPF) categorization for adults according to the NOVA classification using the [[ffq_sum_scores|Food Frequency Questionnaire Sum scores]] from the heart of the FFQ flower ([[1a_questionnaire_2|1A Questionnaire 2]]). ([[sections]]: [[Nutrition]] and [[secondary & linked variables]]).\\ |
| The UPF food categorization can be requested in the Lifelines catalogue or by mail (data@lifelines.nl). When this data has been used in your research, you will have to include a reference to the the following paper: | The UPF food categorization can be requested in the Lifelines catalogue or by mail (data@lifelines.nl). When this data has been used in your research, you will have to include a reference to the the following paper: | ||
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| ===== Background information ===== | ===== Background information ===== | ||
| + | //From the paper of [[https://doi.org/10.1186/s12916-021-02200-4|Duan et al. (2022)]]//\\ | ||
| + | Research on UPF has been facilitated by the development of the NOVA classification. The NOVA classification is a frequently used method to categorize food and drinks based on the nature, extent, and purpose of food processing. The NOVA classification comprises four categories, ranging from un-processed/minimally processed food to UPF. According to the NOVA classification, UPF is mostly formulated from food substances and industrial ingredients that undergo a series of chemical and physical manufacturing processes. The resulting food products are often pre-packed, contain little or no intact (un-processed) food, and are considered microbiologically safe, convenient, and palatable.\\ | ||
| + | \\ | ||
| ===== Calculation of UPF categorization ===== | ===== Calculation of UPF categorization ===== | ||
| + | Using the NOVA classification, the 110 food items from the [[ffq|FFQ heart]] were categorized in four proposed categories: | ||
| + | - **Unprocessed or minimally processed food:** for example fresh vegetables or fruits and unprocessed meat | ||
| + | - **Processed culinary ingredient:** for example butter or oil for cooking, sugar, and salt | ||
| + | - **Processed food:** for example canned vegetables or fish and fruits in syrup | ||
| + | - **Ultra-processed food:** for example processed meat, soft drinks | ||
| + | Per category three types of variables have been created: | ||
| + | * **Classification variable:** which adds up the intake of all food items that belong to the specific category | ||
| + | * **Weight percentage variable:** which indicates how much of the total food intake belongs to the specific category | ||
| + | * **Weight per 1000kcal variable:** which presents the specific category per 1000 kcal | ||
| + | === Remarks from the UMCG researchers === | ||
| + | - The current categorization doesn't specifically handle the Betrouwbaarheid of energy intake (provided in the [[ffq_sum_scores|Food Frequency Questionnaire Sum scores]]). This could be a decision for other researchers using the UPF classification data. | ||
| + | - According to the NOVA classification, some alcohol products should also be characterized as ultra-processed food. However, we did not do this because alcohol may have separate health effects. Therefore, we analyze alcohol intake always as a separate covariate. This is also practiced by other papers from other cohorts. | ||
| + | \\ | ||
| ===== Variables ===== | ===== Variables ===== | ||
| + | | **Questions English** | **Questions Dutch** | **Code** | **Variable** | **Assessment** | **Age** | | ||
| + | | food intake (gram per day) / NOVA classification 1: unprocessed or minimally processed food | voedselinname (gram per dag) / NOVA classificatie 1: onbewerkte of minimaal bewerkte voeding | nova_foodintake_adu_c_1 | nova1 | [[1a_questionnaire_2|1A]] | 18+ | | ||
| + | | food intake (gram per day) / NOVA classification 2: processed culinary ingredient | voedselinname (gram per dag) / NOVA classificatie 2: bewerkt culinair ingrediënt | nova_foodintake_adu_c_2 | nova2 | [[1a_questionnaire_2|1A]] | 18+ | | ||
| + | | food intake (gram per day) / NOVA classification 3: processed food | voedselinname (gram per dag) / NOVA classificatie 3: bewerkt voedsel | nova_foodintake_adu_c_3 | nova3 | [[1a_questionnaire_2|1A]] | 18+ | | ||
| + | | food intake (gram per day) / NOVA classification 4: ultra-processed food | voedselinname (gram per dag) / NOVA classificatie 4: ultabewerkt voedsel | nova_foodintake_adu_c_4 | nova4 | [[1a_questionnaire_2|1A]] | 18+ | | ||
| + | | % of the total food intake in gram per day / NOVA classification 1: unprocessed or minimally processed food | % van de totale voedselinname in gram per dag / NOVA classificatie 1: onbewerkte of minimaal bewerkte voeding | nova_weightratio_adu_c_1 | nova1prt | [[1a_questionnaire_2|1A]] | 18+ | | ||
| + | | % of the total food intake in gram per day / NOVA classification 2: processed culinary ingredient | % van de totale voedselinname in gram per dag / NOVA classificatie 2: bewerkt culinair ingrediënt | nova_weightratio_adu_c_2 | nova2prt | [[1a_questionnaire_2|1A]] | 18+ | | ||
| + | | % of the total food intake in gram per day / NOVA classification 3: processed food | % van de totale voedselinname in gram per dag / NOVA classificatie 3: bewerkt voedsel | nova_weightratio_adu_c_3 | nova3prt | [[1a_questionnaire_2|1A]] | 18+ | | ||
| + | | % of the total food intake in gram per day / NOVA classification 4: ultra-processed food | % van de totale voedselinname in gram per dag / NOVA classificatie 4: ultabewerkt voedsel | nova_weightratio_adu_c_4 | nova4prt | [[1a_questionnaire_2|1A]] | 18+ | | ||
| + | | gram per 1000kcal of the total food intake per day / NOVA classification 1: unprocessed or minimally processed food | gram per 1000kcal of de totale voedsellinname per dag / NOVA classificatie 1: onbewerkte of minimaal bewerkte voeding | nova_energyratio_adu_c_1 | nova1kcal | [[1a_questionnaire_2|1A]] | 18+ | | ||
| + | | gram per 1000kcal of the total food intake per day / NOVA classification 2: processed culinary ingredient | gram per 1000kcal of de totale voedsellinname per dag / NOVA classificatie 2: bewerkt culinair ingrediënt | nova_energyratio_adu_c_2 | nova2kcal | [[1a_questionnaire_2|1A]] | 18+ | | ||
| + | | gram per 1000kcal of the total food intake per day / NOVA classification 3: processed food | gram per 1000kcal of de totale voedsellinname per dag / NOVA classificatie 3: bewerkt voedsel | nova_energyratio_adu_c_3 | nova3kcal | [[1a_questionnaire_2|1A]] | 18+ | | ||
| + | | gram per 1000kcal of the total food intake per day / NOVA classification 4: ultra-processed food | gram per 1000kcal of de totale voedsellinname per dag / NOVA classificatie 4: ultabewerkt voedsel | nova_energyratio_adu_c_4 | nova4kcal | [[1a_questionnaire_2|1A]] | 18+ | | ||
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| - | ===== ... ===== | ||
upf_categorization.txt · Last modified: 2023/02/01 16:21 by flip
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