Enhancing the efficacy of health promotion interventions: a focus on the context

Highlights • Health promotion programmes in various settings are effective means to improve the health of the population. • Despite substantial research, results from programme implementation remain unclear and challenging to evaluate. • A shift from ‘one size fits all’ evidence-based fidelity to anchoring and tailoring interventions to their contexts is needed. • Recurrences in combinations of contextual factors (namely Typical Contextual Equations) occur in a given type of context. • TCEs focus on a selection of the key critical factors that have drastic impact on implementation.