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The need for interventions to manage the global epidemic of childhood overweight is well recognised,1 and, increasingly, the role of parents in this process is acknowledged for early school-aged children.2 However, the evidence to guide such interventions is limited. Many studies have methodological limitations and short follow-up periods.1 Most interventions in adult and child populations show positive outcomes at the end of the intervention period, but it is the sustainability of these that is of paramount interest.
The study by Collins and colleagues addresses many of the limitations of previous studies, reports sustainability of the intervention 2 years from baseline and provides …
Competing interests None.