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        Characteristics of European adults who dropped out from the Food4Me Internet-based personalised nutrition intervention

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        Author
        Livingstone, Katherine M
        Celis-Morales, Carlos
        Macready, Anna L
        Fallaize, Rosalind
        Forster, Hannah
        Woolhead, Clara
        O'Donovan, Clare B
        Marsaux, Cyril Fm
        Navas-Carretero, Santiago
        San-Cristobal, Rodrigo
        Kolossa, Silvia
        Tsirigoti, Lydia
        Lambrinou, Christina P
        Moschonis, George
        Surwiłło, Agnieszka
        Drevon, Christian A
        Manios, Yannis
        Traczyk, Iwona
        Gibney, Eileen R
        Brennan, Lorraine
        Walsh, Marianne C
        Lovegrove, Julie A
        Martinez, J Alfredo
        Saris, Wim Hm
        Daniel, Hannelore
        Gibney, Mike
        Mathers, John C
        Attention
        2299/17420
        Abstract
        OBJECTIVE: To characterise participants who dropped out of the Food4Me Proof-of-Principle study. DESIGN: The Food4Me study was an Internet-based, 6-month, four-arm, randomised controlled trial. The control group received generalised dietary and lifestyle recommendations, whereas participants randomised to three different levels of personalised nutrition (PN) received advice based on dietary, phenotypic and/or genotypic data, respectively (with either more or less frequent feedback). SETTING: Seven recruitment sites: UK, Ireland, The Netherlands, Germany, Spain, Poland and Greece. SUBJECTS: Adults aged 18-79 years (n 1607). RESULTS: A total of 337 (21 %) participants dropped out during the intervention. At baseline, dropouts had higher BMI (0·5 kg/m2; P<0·001). Attrition did not differ significantly between individuals receiving generalised dietary guidelines (Control) and those randomised to PN. Participants were more likely to drop out (OR; 95 % CI) if they received more frequent feedback (1·81; 1·36, 2·41; P<0·001), were female (1·38; 1·06, 1·78; P=0·015), less than 45 years old (2·57; 1·95, 3·39; P<0·001) and obese (2·25; 1·47, 3·43; P<0·001). Attrition was more likely in participants who reported an interest in losing weight (1·53; 1·19, 1·97; P<0·001) or skipping meals (1·75; 1·16, 2·65; P=0·008), and less likely if participants claimed to eat healthily frequently (0·62; 0·45, 0·86; P=0·003). CONCLUSIONS: Attrition did not differ between participants receiving generalised or PN advice but more frequent feedback was related to attrition for those randomised to PN interventions. Better strategies are required to minimise dropouts among younger and obese individuals participating in PN interventions and more frequent feedback may be an unnecessary burden.
        Publication date
        2016-08-05
        Published in
        Public Health Nutrition
        Published version
        https://doi.org/10.1017/S1368980016002020
        License
        http://creativecommons.org/licenses/by-nc-nd/4.0/
        Other links
        http://hdl.handle.net/2299/17420
        Relations
        School of Life and Medical Sciences
        Metadata
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