Evaluation of recruitment methods for a trial targeting childhood obesity: Families for Health randomised controlled trial

Fleming, J. and Kamal, Atiya and Harrison, E. and Hamborg, T. and Stewart-Brown, S. and Thorogood, M. and Griffiths, F. and Robertson, W. (2015) Evaluation of recruitment methods for a trial targeting childhood obesity: Families for Health randomised controlled trial. Trials, 16 (1). ISSN 1745-6215

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Background: Recruitment to trials evaluating the effectiveness of childhood obesity management interventions is
challenging. We report our experience of recruitment to the Families for Health study, a randomised controlled trial
evaluating the effectiveness of a family-based community programme for children aged 6–11 years, versus usual
care. We evaluated the effectiveness of active recruitment (contacting eligible families directly) versus passive
recruitment (informing the community through flyers, public events, media).
Methods: Initial approaches included passive recruitment via the media (newspapers and radio) and two active
recruitment methods: National Child Measurement Programme (letters to families with overweight children) and
referrals from health-care professionals. With slow initial recruitment, further strategies were employed, including
active (e.g. targeted letters from general practices) and passive (e.g. flyers, posters and public events) methods. At
first enquiry from a potential participant, families were asked where they heard about the study. Further
quantitative (questionnaire) and qualitative data (one-to-one interviews with parents/carers), were collected from
recruited families at baseline and 3-month follow-up and included questions about recruitment.
Results: In total, 194 families enquired about Families for Health, and 115 (59.3 %) were recruited and randomised.
Active recruitment yielded 85 enquiries, with 43 families recruited (50.6 %); passive recruitment yielded 99 enquiries
with 72 families recruited (72.7 %). Information seen at schools or GP surgeries accounted for over a quarter of
enquiries (28.4 %) and over a third (37.4 %) of final recruitment. Eight out of ten families who enquired this way
were recruited. Media-led enquiries were low (5 %), but all were recruited. Children of families recruited actively
were more likely to be Asian or mixed race. Despite extensive recruitment methods, the trial did not recruit as
planned, and was awarded a no-cost extension to complete the 12-month follow-up.
Conclusions: The higher number of participants recruited through passive methods may be due to the large
number of potential participants these methods reached and because participants may see the information more
than once. Recruiting to a child obesity treatment study is complex and it is advisable to use multiple recruitment
strategies, some aiming at blanket coverage and some targeted at families with children who are overweight.
Trial registration: Current Controlled Trials ISRCTN45032201 (Date: 18 August 2011)

Item Type: Article
Identification Number: https://doi.org/10.1186/s13063-015-1062-x
Subjects: CAH04 - psychology > CAH04-01 - psychology > CAH04-01-01 - psychology (non-specific)
Divisions: Faculty of Business, Law and Social Sciences > School of Social Sciences > Dept. Psychology
Depositing User: Silvio Aldrovandi
Date Deposited: 19 Jun 2017 12:54
Last Modified: 03 Mar 2022 15:42
URI: https://www.open-access.bcu.ac.uk/id/eprint/4692

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