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  • 1.
    Henriksson, Hanna
    et al.
    Linkoping Univ, Dept Clin & Expt Med, Linkoping, Sweden.;Karolinska Inst, Dept Biosci & Nutr, S-14183 Huddinge, Sweden..
    Bonn, Stephanie E.
    Karolinska Inst, Dept Med Epidemiol & Biostat, Stockholm, Sweden..
    Bergstrom, Anna
    Karolinska Inst, Inst Enviromental Med, Stockholm, Sweden..
    Bälter, Katarina
    Karolinska Inst, Dept Med Epidemiol & Biostat, Stockholm, Sweden..
    Balter, Olle
    Royal Inst Technol, Sch Comp Sci & Commun, Stockholm, Sweden..
    Delisle, Christine
    Karolinska Inst, Dept Biosci & Nutr, S-14183 Huddinge, Sweden..
    Forsum, Elisabet
    Linkoping Univ, Dept Clin & Expt Med, Linkoping, Sweden..
    Lof, Marie
    Linkoping Univ, Dept Clin & Expt Med, Linkoping, Sweden.;Karolinska Inst, Dept Biosci & Nutr, S-14183 Huddinge, Sweden..
    A New Mobile Phone-Based Tool for Assessing Energy and Certain Food Intakes in Young Children: A Validation Study2015Ingår i: JMIR mhealth and uhealth, E-ISSN 2291-5222, Vol. 3, nr 2, artikel-id e38Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Background: Childhood obesity is an increasing health problem globally. Obesity may be established already at pre-school age. Further research in this area requires accurate and easy-to-use methods for assessing the intake of energy and foods. Traditional methods have limited accuracy, and place large demands on the study participants and researchers. Mobile phones offer possibilities for methodological advancements in this area since they are readily available, enable instant digitalization of collected data, and also contain a camera to photograph pre- and post-meal food items. We have recently developed a new tool for assessing energy and food intake in children using mobile phones called the Tool for Energy Balance in Children (TECH). Objective: The main aims of our study are to (1) compare energy intake by means of TECH with total energy expenditure (TEE) measured using a criterion method, the doubly labeled water (DLW) method, and (2) to compare intakes of fruits and berries, vegetables, juice, and sweetened beverages assessed by means of TECH with intakes obtained using a Web-based food frequency questionnaire (KidMeal-Q) in 3 year olds. Methods: In this study, 30 Swedish 3 year olds were included. Energy intake using TECH was compared to TEE measured using the DLW method. Intakes of vegetables, fruits and berries, juice, as well as sweetened beverages were assessed using TECH and compared to the corresponding intakes assessed using KidMeal-Q. Wilcoxon matched pairs test, Spearman rank order correlations, and the Bland-Altman procedure were applied. Results: The mean energy intake, assessed by TECH, was 5400 kJ/24h (SD 1500). This value was not significantly different (P=.23) from TEE (5070 kJ/24h, SD 600). However, the limits of agreement (2 standard deviations) in the Bland-Altman plot for energy intake estimated using TECH compared to TEE were wide (2990 kJ/24h), and TECH overestimated high and underestimated low energy intakes. The Bland-Altman plots for foods showed similar patterns. The mean intakes of vegetables, fruits and berries, juice, and sweetened beverages estimated using TECH were not significantly different from the corresponding intakes estimated using KidMeal-Q. Moderate but statistically significant correlations (rho=.42-.46, P=.01-.02) between TECH and KidMeal-Q were observed for intakes of vegetables, fruits and berries, and juice, but not for sweetened beverages. Conclusion: We found that one day of recordings using TECH was not able to accurately estimate intakes of energy or certain foods in 3 year old children.

  • 2.
    Nystrom, Christine Delisle
    et al.
    Karolinska Inst, Dept Biosci & Nutr, Novum, S-14183 Huddinge, Sweden..
    Henriksson, Hanna
    Univ Granada, PROFITH Promoting FITness & Hlth Phys Act Res Grp, Dept Phys Educ & Sports, Fac Sports Sci, E-18071 Granada, Spain..
    Alexandrou, Christina
    Karolinska Inst, Dept Biosci & Nutr, Novum, S-14183 Huddinge, Sweden..
    Bergstrom, Anna
    Karolinska Inst, Dept Environm Med, S-17177 Stockholm, Sweden..
    Bonn, Stephanie
    Karolinska Inst, Dept Med Epidemiol & Biostat, S-17177 Stockholm, Sweden..
    Bälter, Katarina
    Karolinska Inst, Dept Med Epidemiol & Biostat, S-17177 Stockholm, Sweden..
    Lof, Marie
    Karolinska Inst, Dept Biosci & Nutr, Novum, S-14183 Huddinge, Sweden..
    Validation of an Online Food Frequency Questionnaire against Doubly LabelledWater and 24 h Dietary Recalls in Pre-School Children2017Ingår i: Nutrients, ISSN 2072-6643, E-ISSN 2072-6643, Vol. 9, nr 1, artikel-id 66Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The development of easy-to-use and accurate methods to assess the intake of energy, foods and nutrients in pre-school children is needed. KidMeal-Q is an online food frequency questionnaire developed for the LifeGene prospective cohort study in Sweden. The aims of this study were to compare: (i) energy intake (EI) obtained using KidMeal-Q to total energy expenditure (TEE) measured via doubly labelled water and (ii) the intake of certain foods measured using KidMeal-Q to intakes acquired by means of 24 h dietary recalls in 38 children aged 5.5 years. The mean EI calculated using KidMeal-Q was statistically different (p < 0.001) from TEE (4670 +/- 1430 kJ/24 h and 6070 +/- 690 kJ/24 h, respectively). Significant correlations were observed for vegetables, fruit juice and candy between KidMeal-Q and 24 h dietary recalls. Only sweetened beverage consumption was significantly different in mean intake (p < 0.001), as measured by KidMeal-Q and 24 h dietary recalls. In conclusion, KidMeal-Q had a relatively short answering time and comparative validity to other food frequency questionnaires. However, its accuracy needs to be improved before it can be used in studies in pre-school children.

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