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        Capturing health and eating status through a nutritional perception screening questionnaire (NPSQ9) in a randomised internet-based personalised nutrition intervention : the Food4Me study

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        Author
        San-Cristobal, Rodrigo
        Navas-Carretero, Santiago
        Celis-Morales, Carlos
        Livingstone, Katherine M
        Stewart-Knox, Barbara
        Rankin, Audrey
        Macready, Anna L
        Fallaize, Rosalind
        O'Donovan, Clare B
        Forster, Hannah
        Woolhead, Clara
        Walsh, Marianne C
        Lambrinou, Christina P
        Moschonis, George
        Manios, Yannis
        Jarosz, Miroslaw
        Daniel, Hannelore
        Gibney, Eileen R
        Brennan, Lorraine
        Gundersen, Thomas E
        Drevon, Christian A
        Gibney, Mike
        Marsaux, Cyril F M
        Saris, Wim H M
        Lovegrove, Julie A
        Frewer, Lynn J
        Mathers, John C
        Martinez, J Alfredo
        Food4Me Study
        Attention
        2299/20651
        Abstract
        BACKGROUND: National guidelines emphasize healthy eating to promote wellbeing and prevention of non-communicable diseases. The perceived healthiness of food is determined by many factors affecting food intake. A positive perception of healthy eating has been shown to be associated with greater diet quality. Internet-based methodologies allow contact with large populations. Our present study aims to design and evaluate a short nutritional perception questionnaire, to be used as a screening tool for assessing nutritional status, and to predict an optimal level of personalisation in nutritional advice delivered via the Internet. METHODS: Data from all participants who were screened and then enrolled into the Food4Me proof-of-principle study (n = 2369) were used to determine the optimal items for inclusion in a novel screening tool, the Nutritional Perception Screening Questionnaire-9 (NPSQ9). Exploratory and confirmatory factor analyses were performed on anthropometric and biochemical data and on dietary indices acquired from participants who had completed the Food4Me dietary intervention (n = 1153). Baseline and intervention data were analysed using linear regression and linear mixed regression, respectively. RESULTS: A final model with 9 NPSQ items was validated against the dietary intervention data. NPSQ9 scores were inversely associated with BMI (β = -0.181, p < 0.001) and waist circumference (Β = -0.155, p < 0.001), and positively associated with total carotenoids (β = 0.198, p < 0.001), omega-3 fatty acid index (β = 0.155, p < 0.001), Healthy Eating Index (HEI) (β = 0.299, p < 0.001) and Mediterranean Diet Score (MDS) (β = 0. 279, p < 0.001). Findings from the longitudinal intervention study showed a greater reduction in BMI and improved dietary indices among participants with lower NPSQ9 scores. CONCLUSIONS: Healthy eating perceptions and dietary habits captured by the NPSQ9 score, based on nine questionnaire items, were associated with reduced body weight and improved diet quality. Likewise, participants with a lower score achieved greater health improvements than those with higher scores, in response to personalised advice, suggesting that NPSQ9 may be used for early evaluation of nutritional status and to tailor nutritional advice. TRIAL REGISTRATION: NCT01530139 .
        Publication date
        2017-12-11
        Published in
        International Journal of Behavioral Nutrition and Physical Activity
        Published version
        https://doi.org/10.1186/s12966-017-0624-6
        License
        http://creativecommons.org/licenses/by/4.0/
        Other links
        http://hdl.handle.net/2299/20651
        Relations
        School of Life and Medical Sciences
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