Randomised controlled trial of real-time feedback and brief coaching to reduce indoor smoking

Background Previous secondhand smoke (SHS) reduction interventions have provided only delayed feedback on reported smoking behaviour, such as coaching, or presenting results from child cotinine assays or air particle counters. Design This SHS reduction trial assigned families at random to brief coaching and continuous real-time feedback (intervention) or measurement-only (control) groups. Participants We enrolled 298 families with a resident...