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Evaluation of a Mobile Phone Image-Based Dietary Assessment Method in Adults with Type 2 Diabetes

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Priority Research Centre in Physical Activity and Nutrition and School of Health Sciences, University of Newcastle, Callaghan, New South Wales 2308, Australia
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School of Exercise and Nutrition Sciences, Faculty of Health, and Institute of Health and Biomedical Innovation, Queensland University of Technology, Kelvin Grove, Queensland 4059, Australia
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School of Exercise and Health Sciences, Edith Cowan University, Joondalup, Western Australia 6027, Australia
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Department of Diabetes and Endocrinology, Princess Alexandra Hospital, Woolloongabba, Queensland 4102, Australia
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School of Medicine, University of Queensland, Woolloongabba, Queensland 4102, Australia
*
Author to whom correspondence should be addressed.
Nutrients 2015, 7(6), 4897-4910; https://doi.org/10.3390/nu7064897
Received: 15 April 2015 / Revised: 3 June 2015 / Accepted: 9 June 2015 / Published: 17 June 2015
(This article belongs to the Special Issue Assessment of Nutrient Intakes)
Image-based dietary records have limited evidence evaluating their performance and use among adults with a chronic disease. This study evaluated the performance of a 3-day mobile phone image-based dietary record, the Nutricam Dietary Assessment Method (NuDAM), in adults with type 2 diabetes mellitus (T2DM). Criterion validity was determined by comparing energy intake (EI) with total energy expenditure (TEE) measured by the doubly-labelled water technique. Relative validity was established by comparison to a weighed food record (WFR). Inter-rater reliability was assessed by comparing estimates of intake from three dietitians. Ten adults (6 males, age: 61.2 ± 6.9 years old, BMI: 31.0 ± 4.5 kg/m2) participated. Compared to TEE, mean EI (MJ/day) was significantly under-reported using both methods, with a mean ratio of EI:TEE 0.76 ± 0.20 for the NuDAM and 0.76 ± 0.17 for the WFR. Correlations between the NuDAM and WFR were mostly moderate for energy (r = 0.57), carbohydrate (g/day) (r = 0.63, p < 0.05), protein (g/day) (r = 0.78, p < 0.01) and alcohol (g/day) (rs = 0.85, p < 0.01), with a weaker relationship for fat (g/day) (r = 0.24). Agreement between dietitians for nutrient intake for the 3-day NuDAM (Intra-class Correlation Coefficient (ICC) = 0.77–0.99) was lower when compared with the 3-day WFR (ICC = 0.82–0.99). These findings demonstrate the performance and feasibility of the NuDAM to assess energy and macronutrient intake in a small sample. Some modifications to the NuDAM could improve efficiency and an evaluation in a larger group of adults with T2DM is required. View Full-Text
Keywords: diabetes; doubly labelled water; image-based dietary records; nutrition assessment diabetes; doubly labelled water; image-based dietary records; nutrition assessment
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Rollo, M.E.; Ash, S.; Lyons-Wall, P.; Russell, A.W. Evaluation of a Mobile Phone Image-Based Dietary Assessment Method in Adults with Type 2 Diabetes. Nutrients 2015, 7, 4897-4910.

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