%X Increasing smoking cessation interventions have led to higher intentions to quit smoking for both males and females however these intentions have not led to decreasing smoking prevalence for females between after 2008. Looking at differences between age-categories we can determine that increasing smoking cessation interventions have led to higher intentions to quit smoking. However for the 15-19 age-category these rising intentions to quit have not resulted in a decreasing smoking prevalence for that age-category. Increasig smoking cessation interventions have had increasing effects on the intentions to quit smoking for high, middle and low socio-economic groups, however the gap in smoking prevalence between high and low socio-economic groups widened. Conclusion: For many different subgroups cessation interventions have led to increasing intentions to quit smoking and decreasing smoking prevalence, except for females, the 15-19 age-category and low socio-economic status groups. %A J.R. van Dijken %L theses_frw2926 %D 2012 %T The influence of smoking cessation interventions on the smoking prevalence and intention to quit for different subgroups