Background: Although effective in the treatment of obstructive sleep apnoea (OSA), continuous positive airway pressure (CPAP) does not meet with universal acceptance by users. Educational, supportive and behavioural interventions may help people with obstructive sleep apnoea recognise the need for regular and continued use of continuous positive airway pressure.Objectives: To critically assess strategies that are educational, or supportive, or behavioural in encouraging people who have been prescribed or offered CPAP to use their machines.