“…Effectiveness and reach of smoking cessation interventions have been estimated in several reviews, and the findings incorporated into CB or ROI estimation exercises 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22. However, as evidence accumulates we can make improved estimates for interventions already known about, add estimates for new interventions or new versions of interventions and revise estimates for interventions to take account of varying context.…”