Involving young people in sexual health research and service improvement: conceptual analysis of patient and public involvement (PPI) in three projects.

Mainstreaming young people's meaningful involvement in shaping SRH research and services requires systems-level change. Resources are required to support SRH researchers and practitioners to share learning and build sustainable multi-sector partnerships, which in turn can increase opportunities for young people from diverse groups to engage with SRH-related PPI activities.