(2015) A cluster randomised controlled trial comparing the effectiveness and cost-effectiveness of a school-based cognitive behavioural therapy programme (FRIENDS) in the reduction of anxiety and improvement in mood in children aged 9/10 years. NIHR Journals Library - Public Health Research: Public Health Research (PHR) publishes research on the benefits, costs, acceptability and wider impacts of non-NHS interventions intended to improve the health of the public and reduce inequalities in health. Find out more about the PHR journal at https://www.journalslibrary.nihr.ac.uk/phr/#/.