Relative validity of a semi-quantitative food-frequency questionnaire in an elderly Mediterranean population of Spain
The aim of the present study was to assess reproducibility and relative validity of a self-administered FFQ used in the PREDIMED Study, a clinical trial for primary prevention of CVD by Mediterranean diet in a population at high cardiovascular risk. The FFQ was administered twice (FFQ1 and FFQ2) to...
| Main Authors: | , , , , , , , , , |
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| Format: | info:eu-repo/semantics/article |
| Language: | eng |
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Cambridge University Press
2014
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| Online Access: | https://hdl.handle.net/10171/35560 |
| _version_ | 1793400034394374144 |
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| author | Fernandez-Ballarth, J.D. (J. D.) Pinol, J.L. (Josep L.) Zazpe, I. (Itziar) Corella, D. (Dolores) Carrasco, P. (Paula) Toledo, E. (Estefanía) Perez-Bauer, M. (Manuel) Martinez-Gonzalez, M.A. (Miguel Ángel) Salas-Salvado, J. (Jordi) Martin-Moreno, J.M. (J.M.) |
| author_facet | Fernandez-Ballarth, J.D. (J. D.) Pinol, J.L. (Josep L.) Zazpe, I. (Itziar) Corella, D. (Dolores) Carrasco, P. (Paula) Toledo, E. (Estefanía) Perez-Bauer, M. (Manuel) Martinez-Gonzalez, M.A. (Miguel Ángel) Salas-Salvado, J. (Jordi) Martin-Moreno, J.M. (J.M.) |
| author_sort | Fernandez-Ballarth, J.D. (J. D.) |
| collection | DSpace |
| description | The aim of the present study was to assess reproducibility and relative validity of a self-administered FFQ used in the PREDIMED Study, a clinical trial for primary prevention of CVD by Mediterranean diet in a population at high cardiovascular risk. The FFQ was administered twice (FFQ1 and FFQ2) to explore reproducibility at 1 year. Four 3d dietary records (DR) were used as reference to explore validity; participants therefore recorded their food intake over 12 d in the course of 1 year. The degree of misclassification in the FFQ was also evaluated by a contingency table of quintiles comparing the information from the FFQ2 and the DR. A total of 158 men and women (aged 55-80 years) were asked not to modify their dietary habits during the study period. Reproducibility for food groups, energy and nutrient intake, explored by the Pearson correlation coefficient (r) raneed 0.50-0.82, and the intraclass correlation coefficient ([CC) ranged from 0.63 to 0.90. The FFQ2 tended to report higher energy and nutrient intake than the DR. The validity indices of the FFQ in relation to the DR for food groups and energy and nutrient intake ranged (r) from 0.24 to 0.72, while the ranee of the ICC: was between 0.40 and 0.84. With regard to food groups, 68-83 % of individuals were in the same or adjacent quintile in both methods, a figure which decreased to 55-75 % for enemy and nutrient intake. We concluded that FFQ measurements had :good reproducibility and a relative validity similar to those of FFQ used in other prospective studies. |
| format | info:eu-repo/semantics/article |
| id | oai:dadun.unav.edu:10171-35560 |
| institution | Universidad de Navarra |
| language | eng |
| publishDate | 2014 |
| publisher | Cambridge University Press |
| record_format | dspace |
| spelling | oai:dadun.unav.edu:10171-355602022-06-29T09:41:38Z Relative validity of a semi-quantitative food-frequency questionnaire in an elderly Mediterranean population of Spain Fernandez-Ballarth, J.D. (J. D.) Pinol, J.L. (Josep L.) Zazpe, I. (Itziar) Corella, D. (Dolores) Carrasco, P. (Paula) Toledo, E. (Estefanía) Perez-Bauer, M. (Manuel) Martinez-Gonzalez, M.A. (Miguel Ángel) Salas-Salvado, J. (Jordi) Martin-Moreno, J.M. (J.M.) Validity Reproducibility FFQ Dietary records Mediterranean population: PREDIMED Study The aim of the present study was to assess reproducibility and relative validity of a self-administered FFQ used in the PREDIMED Study, a clinical trial for primary prevention of CVD by Mediterranean diet in a population at high cardiovascular risk. The FFQ was administered twice (FFQ1 and FFQ2) to explore reproducibility at 1 year. Four 3d dietary records (DR) were used as reference to explore validity; participants therefore recorded their food intake over 12 d in the course of 1 year. The degree of misclassification in the FFQ was also evaluated by a contingency table of quintiles comparing the information from the FFQ2 and the DR. A total of 158 men and women (aged 55-80 years) were asked not to modify their dietary habits during the study period. Reproducibility for food groups, energy and nutrient intake, explored by the Pearson correlation coefficient (r) raneed 0.50-0.82, and the intraclass correlation coefficient ([CC) ranged from 0.63 to 0.90. The FFQ2 tended to report higher energy and nutrient intake than the DR. The validity indices of the FFQ in relation to the DR for food groups and energy and nutrient intake ranged (r) from 0.24 to 0.72, while the ranee of the ICC: was between 0.40 and 0.84. With regard to food groups, 68-83 % of individuals were in the same or adjacent quintile in both methods, a figure which decreased to 55-75 % for enemy and nutrient intake. We concluded that FFQ measurements had :good reproducibility and a relative validity similar to those of FFQ used in other prospective studies. 2014-03-20T12:36:49Z 2014-03-20T12:36:49Z 2010 info:eu-repo/semantics/article https://hdl.handle.net/10171/35560 eng info:eu-repo/semantics/openAccess info:eu-repo/semantics/openAccess application/pdf Cambridge University Press |
| spellingShingle | Validity Reproducibility FFQ Dietary records Mediterranean population: PREDIMED Study Fernandez-Ballarth, J.D. (J. D.) Pinol, J.L. (Josep L.) Zazpe, I. (Itziar) Corella, D. (Dolores) Carrasco, P. (Paula) Toledo, E. (Estefanía) Perez-Bauer, M. (Manuel) Martinez-Gonzalez, M.A. (Miguel Ángel) Salas-Salvado, J. (Jordi) Martin-Moreno, J.M. (J.M.) Relative validity of a semi-quantitative food-frequency questionnaire in an elderly Mediterranean population of Spain |
| title | Relative validity of a semi-quantitative food-frequency questionnaire in an elderly Mediterranean population of Spain |
| title_full | Relative validity of a semi-quantitative food-frequency questionnaire in an elderly Mediterranean population of Spain |
| title_fullStr | Relative validity of a semi-quantitative food-frequency questionnaire in an elderly Mediterranean population of Spain |
| title_full_unstemmed | Relative validity of a semi-quantitative food-frequency questionnaire in an elderly Mediterranean population of Spain |
| title_short | Relative validity of a semi-quantitative food-frequency questionnaire in an elderly Mediterranean population of Spain |
| title_sort | relative validity of a semi-quantitative food-frequency questionnaire in an elderly mediterranean population of spain |
| topic | Validity Reproducibility FFQ Dietary records Mediterranean population: PREDIMED Study |
| url | https://hdl.handle.net/10171/35560 |
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