RT info:eu-repo/semantics/article T1 EVIDENT smartphone app, a new method for the dietary record: comparison with a food frequency questionnaire A1 Recio Rodríguez, José I. A1 Rodríguez Martín, Carmela A1 González Sánchez, Jesús A1 Rodríguez Sánchez, Emiliano A1 Martín Borras, Carme A1 Martínez Vizcaino, Vicente A1 Arietaleanizbeaskoa, María Soledad A1 Magdalena González, Olga A1 Fernández Alonso, Carmen A1 Maderuelo Fernández, José A. A1 Gómez Marcos, Manuel A. A1 García Ortiz, Luis A1 On Behalf of the EVIDENT Investigators K1 technology assessment K1 biomedical K1 telemedicine K1 energy intake K1 diet records K1 surveys and questionnaires K1 Nutrición K1 Nutrition AB Background: More alternatives are needed for recording people’s normal diet in different populations, especially adults or theelderly, as part of the investigation into the effects of nutrition on health.Objective: The aim of this study was to compare the estimated values of energy intake, macro- and micronutrient, and alcoholconsumption gathered using the EVIDENT II smartphone app against the data estimated with a food frequency questionnaire(FFQ) in an adult population aged 18 to 70 years.Methods: We included 362 individuals (mean age 52 years, SD 12; 214/362, 59.1% women) who were part of the EVIDENTII study. The participants registered their food intake using the EVIDENT app during a period of 3 months and through an FFQ.Both methods estimate the average nutritional composition, including energy intake, macro- and micronutrients, and alcohol.Through the app, the values of the first week of food recording, the first month, and the entire 3-month period were estimated.The FFQ gathers data regarding the food intake of the year before the moment of interview.Results: The intraclass correlation for the estimation of energy intake with the FFQ and the app shows significant results, withthe highest values returned when analyzing the app’s data for the full 3-month period (.304, 95% CI 0.144-0.434; P<.001). For this period, the correlation coefficient for energy intake is .233 (P<.001). The highest value corresponds to alcohol consumptionand the lowest to the intake of polyunsaturated fatty acids (r=.676 and r=.155; P<.001), respectively. The estimation of dailyintake of energy, macronutrients, and alcohol presents higher values in the FFQ compared with the EVIDENT app data. Consideringthe values recorded during the 3-month period, the FFQ for energy intake estimation (Kcal) was higher than that of the app (adifference of 408.7, 95% CI 322.7-494.8; P<.001). The same is true for the other macronutrients, with the exception g/day ofsaturated fatty acids (.4, 95% CI −1.2 to 2.0; P=.62).Conclusions: The EVIDENT app is significantly correlated to FFQ in the estimation of energy intake, macro- and micronutrients,and alcohol consumption. This correlation increases with longer app recording periods. The EVIDENT app can be a goodalternative for recording food intake in the context of longitudinal or intervention studies.Trial Registration: ClinicalTrials.gov NCT02016014; http://clinicaltrials.gov/ct2/show/NCT02016014 (Archived by WebCiteat http://www.webcitation.org/760i8EL8Q). PB JMIR Publications YR 2019 FD 2019-02 LK http://hdl.handle.net/10259/5202 UL http://hdl.handle.net/10259/5202 LA eng NO Spanish Ministry of Science and Innovation and Carlos III Health Institute/European Regional Development Fund (FIS: PI13/00618, PI13/01526, PI13/00058, PI13/01635, PI13/02528, PI12/01474; RETICS: RD12/0005, RD16/0007), Regional Health Management of Castilla and León (GRS 1191/B/15, GRS 909/B/14, GRS 770/B/13), and the Infosalud Foundation DS Repositorio Institucional de la Universidad de Burgos RD 29-mar-2024