Implications for research and practice
The latest Cochrane review evaluates the findings of several trials using spirometry as a motivator for smoking cessation. Its authors conclude that there is insufficient evidence supporting its use. They also recommend improving the methodological quality of studies to yield more robust results [Our results demonstrate that primary care delivered intervention, combining brief counselling with detailed spirometry information, is effective in increasing punctual and prolonged smoking abstinence rates at 12 months. Prolonged abstinence is contingent on the intervention performed and the stage in the change process. These findings contribute new evidence on the effectiveness of health biomarkers feedback for smoking cessation.