Validity and reproducibility of the PERSIAN Cohort food frequency questionnaire: assessment of major dietary patterns
Abstract Background Dietary patterns, encompassing an overall view of individuals’ dietary intake, are suggested as a suitable means of assessing nutrition’s role in chronic disease development. The aim of this study was to evaluate the validity and reproducibility of a food frequency questionnaire...
| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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BMC
2024-03-01
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| Series: | Nutrition Journal |
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| Online Access: | https://doi.org/10.1186/s12937-024-00938-0 |
| _version_ | 1797259537673093120 |
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| author | Sareh Eghtesad Sahar Masoudi Maryam Sharafkhah Bahram Rashidkhani Ali Esmaeili-Nadimi Farid Najafi Elnaz Faramarzi Reza Homayounfar Pedram Ebrahimnejad Alireza Ansari-Moghaddam Mohammadreza Mirjalili Hossein Poustchi Walter C Willett Reza Malekzadeh Azita Hekmatdoost |
| author_facet | Sareh Eghtesad Sahar Masoudi Maryam Sharafkhah Bahram Rashidkhani Ali Esmaeili-Nadimi Farid Najafi Elnaz Faramarzi Reza Homayounfar Pedram Ebrahimnejad Alireza Ansari-Moghaddam Mohammadreza Mirjalili Hossein Poustchi Walter C Willett Reza Malekzadeh Azita Hekmatdoost |
| author_sort | Sareh Eghtesad |
| collection | DOAJ |
| description | Abstract Background Dietary patterns, encompassing an overall view of individuals’ dietary intake, are suggested as a suitable means of assessing nutrition’s role in chronic disease development. The aim of this study was to evaluate the validity and reproducibility of a food frequency questionnaire (FFQ) designed for use in the Prospective Epidemiological Research Studies in IrAN (PERSIAN), by comparing major dietary patterns assessed by the FFQ with a reference method. Methods Study participants included men and women who enrolled in the PERSIAN Cohort Study at seven of the eighteen centers. These centers were chosen to include dietary variations observed among the different Iranian ethnic populations. Two FFQ were completed for each participant over a one-year study period (FFQ1 upon enrollment and FFQ2 at the end of the study), with 24 interviewer-administered 24-hour dietary recalls (24 h) being completed monthly in between. Spearman correlation coefficients (SCC) were used comparing FFQs 1 and 2 to the 24 h to assess validity, while FFQ1 was compared to FFQ2 to assess reproducibility of the questionnaire. Results Three major dietary patterns—Healthy, Low Protein/High Carb and Unhealthy—were identified, accounting for 70% of variance in the study population. Corrected SCC ranged from 0.31 to 0.61 in the validity and from 0.34 to 0.57 in reproducibility analyses, with the first two patterns, which accounted for over 50% of population variance, correlated at above 0.5 in both parameters, showing acceptable findings. Conclusions The PERSIAN Cohort FFQ is suitable for identification of major dietary patterns in the populations it is used for, in order to assess diet-disease relationships. |
| first_indexed | 2024-04-24T23:11:00Z |
| format | Article |
| id | doaj.art-ea0299e33a0d4b258f22ed64ef5c7883 |
| institution | Directory Open Access Journal |
| issn | 1475-2891 |
| language | English |
| last_indexed | 2024-04-24T23:11:00Z |
| publishDate | 2024-03-01 |
| publisher | BMC |
| record_format | Article |
| series | Nutrition Journal |
| spelling | doaj.art-ea0299e33a0d4b258f22ed64ef5c78832024-03-17T12:16:21ZengBMCNutrition Journal1475-28912024-03-012311910.1186/s12937-024-00938-0Validity and reproducibility of the PERSIAN Cohort food frequency questionnaire: assessment of major dietary patternsSareh Eghtesad0Sahar Masoudi1Maryam Sharafkhah2Bahram Rashidkhani3Ali Esmaeili-Nadimi4Farid Najafi5Elnaz Faramarzi6Reza Homayounfar7Pedram Ebrahimnejad8Alireza Ansari-Moghaddam9Mohammadreza Mirjalili10Hossein Poustchi11Walter C Willett12Reza Malekzadeh13Azita Hekmatdoost14Liver and Pancreatobiliary Diseases Research Center, Digestive Diseases Research Institute, Tehran University of Medical SciencesDigestive Diseases Research Center, Digestive Diseases Research Institute, Tehran University of Medical SciencesLiver and Pancreatobiliary Diseases Research Center, Digestive Diseases Research Institute, Tehran University of Medical SciencesDepartment of Community Nutrition, National Nutrition & Food Technology Research Institute, Shahid Beheshti University of Medical SciencesNon-Communicable Diseases Research Center, Rafsanjan University of Medical SciencesResearch Center for Environmental Determinants of Health (RCEDH), Nutritional Sciences Department, Kermanshah University of Medical SciencesLiver and Gastrointestinal Diseases Research Center, Tabriz University of Medical SciencesNoncommunicable Diseases Research Center, Fasa University of Medical SciencesPharmaceutical Sciences Research Center, Hemoglobinopathy Institute, Mazandaran University of Medical SciencesHealth Promotion Research Center, Zahedan University of Medical SciencesDepartment of Intensive Care, School of Medicine, Shahid Sadoughi University of Medical SciencesLiver and Pancreatobiliary Diseases Research Center, Digestive Diseases Research Institute, Tehran University of Medical SciencesDepartment of Nutrition, Harvard T.H. School of Public HealthDigestive Diseases Research Center, Digestive Diseases Research Institute, Tehran University of Medical SciencesDepartment of Clinical Nutrition & Dietetics, National Nutrition & Food Technology Research Institute, Shahid Beheshti University of Medical SciencesAbstract Background Dietary patterns, encompassing an overall view of individuals’ dietary intake, are suggested as a suitable means of assessing nutrition’s role in chronic disease development. The aim of this study was to evaluate the validity and reproducibility of a food frequency questionnaire (FFQ) designed for use in the Prospective Epidemiological Research Studies in IrAN (PERSIAN), by comparing major dietary patterns assessed by the FFQ with a reference method. Methods Study participants included men and women who enrolled in the PERSIAN Cohort Study at seven of the eighteen centers. These centers were chosen to include dietary variations observed among the different Iranian ethnic populations. Two FFQ were completed for each participant over a one-year study period (FFQ1 upon enrollment and FFQ2 at the end of the study), with 24 interviewer-administered 24-hour dietary recalls (24 h) being completed monthly in between. Spearman correlation coefficients (SCC) were used comparing FFQs 1 and 2 to the 24 h to assess validity, while FFQ1 was compared to FFQ2 to assess reproducibility of the questionnaire. Results Three major dietary patterns—Healthy, Low Protein/High Carb and Unhealthy—were identified, accounting for 70% of variance in the study population. Corrected SCC ranged from 0.31 to 0.61 in the validity and from 0.34 to 0.57 in reproducibility analyses, with the first two patterns, which accounted for over 50% of population variance, correlated at above 0.5 in both parameters, showing acceptable findings. Conclusions The PERSIAN Cohort FFQ is suitable for identification of major dietary patterns in the populations it is used for, in order to assess diet-disease relationships.https://doi.org/10.1186/s12937-024-00938-0Food frequency questionnaireDietary patternsPERSIAN CohortValidityReproducibility |
| spellingShingle | Sareh Eghtesad Sahar Masoudi Maryam Sharafkhah Bahram Rashidkhani Ali Esmaeili-Nadimi Farid Najafi Elnaz Faramarzi Reza Homayounfar Pedram Ebrahimnejad Alireza Ansari-Moghaddam Mohammadreza Mirjalili Hossein Poustchi Walter C Willett Reza Malekzadeh Azita Hekmatdoost Validity and reproducibility of the PERSIAN Cohort food frequency questionnaire: assessment of major dietary patterns Nutrition Journal Food frequency questionnaire Dietary patterns PERSIAN Cohort Validity Reproducibility |
| title | Validity and reproducibility of the PERSIAN Cohort food frequency questionnaire: assessment of major dietary patterns |
| title_full | Validity and reproducibility of the PERSIAN Cohort food frequency questionnaire: assessment of major dietary patterns |
| title_fullStr | Validity and reproducibility of the PERSIAN Cohort food frequency questionnaire: assessment of major dietary patterns |
| title_full_unstemmed | Validity and reproducibility of the PERSIAN Cohort food frequency questionnaire: assessment of major dietary patterns |
| title_short | Validity and reproducibility of the PERSIAN Cohort food frequency questionnaire: assessment of major dietary patterns |
| title_sort | validity and reproducibility of the persian cohort food frequency questionnaire assessment of major dietary patterns |
| topic | Food frequency questionnaire Dietary patterns PERSIAN Cohort Validity Reproducibility |
| url | https://doi.org/10.1186/s12937-024-00938-0 |
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