Agenda-setting in policies related to high-risk sexual behaviours, stimulants, and alcohol abuse in Iranian adolescents.

While the problem stream helped to highlight the problem and increase policy-makers' attention, the politics stream played a significant role. Despite international evidence on the effectiveness of training in sexual issues in reducing high-risk behaviours, it did not succeed in being added to the agenda. The policy stream was heavily influenced by ideology and the political parties in power, affecting evidence-based policy-making. In countries with an ideological approach, the political stream plays a vital role in setting problems on the agenda.