Psychological distress, anxiety and depression are common in adolescence, and even more so following traumatic events. On Friday 15 March 2019, two mosques in Ōtautahi, Christchurch were targeted in an act of terrorism, resulting in 71 people being injured and 51 people being shot dead. This has had widespread repercussions in the Muslim and wider community in Christchurch and New Zealand. Uptake of a response pathway set up by community and district health board groups has been low despite reports of high levels of distress in the adolescent population.

The proposed study offers a transdiagnostic group treatment approach (ie. Targeting a broad range of emotional difficulties) for teenagers from a community impacted by the March 15th shootings, incorporating well-evidenced transdiagnostic treatment principles into an Islamic Psychology framework to address the local population's need. We will determine the feasibility and effectiveness of this approach in increasing wellbeing in teenagers. We will run gender-specific treatment groups (8 participants in each group) recruited from the community, with one individual session (for information and consent) and 6 group sessions. We will measure symptoms of emotional difficulties, trauma symptoms and functioning at baseline, end of treatment and at 3 months follow-up. In addition, we will check in weekly with participants to monitor for any increased distress. We will also measure parental distress to explore whether an intervention for adolescents has an impact on parental wellbeing.

Background and rationale On Friday 15 March 2019, two mosques in Christchurch were targeted in an act of terrorism. A white supremacist shooter attacked approximately 300 people, resulting in 51 deaths and 71 further people injured. The attack has been described as an attack on the Muslim faith and those affected by the event have expressed the importance of spiritual support as well as mental health support in the wake of the tragedy. Research into the effects of the attacks on adults in the Muslim community has identified significant concern over young people's mental health 1. A comprehensive framework of community support for children and adolescents was established involving collaboration between schools, primary care, community NGOs and secondary mental health services however the uptake of these services has been lower than expected despite reports of a growing need for support in these age groups1. Stigma regarding mental illness and distress has been identified as a major barrier to accessing supports.

Psychological distress, anxiety and depression are common in adolescence with substantial personal, societal and economic costs2,3. Transdiagnostic interventions (interventions which can be used across different mental health conditions) have gained support in treatment for adults, and evidence is emerging for their use in adolescent populations4-7. Evidence-informed holistic approaches to supporting wellbeing and mental health place less emphasis on pathology and can be more strengths-based with a focus on values. These approaches may appeal to young people and their families concerned about stigma and labelling 'difficulties' as 'disorders'.

Spiritually integrated psychotherapy has a growing evidence base and is associated with treatment adherence and therapeutic outcome8. An Islamic Psychology approach recognises spirituality as integral to the human experience, with models of Islamic psychotherapy gaining traction in recent years9. A model of traditionally integrated Islamic psychotherapy incorporates five interconnected elements; Áql (cognition), nafs (behavioural inclination), ruh (spirit), ihsas (emotion) and qalb (heart)10.

Holistic approaches to health are not new in New Zealand. Maori models of health are increasingly being adopted such as the Te Whare Tapa Wha model, emphasizing four cornerstones of Maori health11. These include Taha tinana (physical health), Taha wairua (spiritual health), Taha whanau (family health) and Taha hinengaro (mental health).

The proposed study offers a novel treatment approach for teenagers affected by the shootings, incorporating well-evidenced transdiagnostic treatment principles into an Islamic psychology framework to address the local population's need. It will assess the likely size of treatment effect on reported emotional difficulties and post-traumatic stress symptoms, and the feasibility of this approach in supporting wellbeing. We also will measure parental distress (mental health difficulties and physical symptoms) to explore whether an intervention for adolescents has an impact on parental wellbeing. The programme will also provide the opportunity to screen and identify individuals who may benefit from referral to further supports.

Inclusion Criteria:

• All high school enrolled teenagers
• English speaking
• Participants do not need to identify as Muslim but will be made aware that the protocol incorporates elements of the Muslim faith.

Exclusion Criteria:

• active psychosis,
• severe substance use,
• intellectual disability
• non-English speaking young people.

There will be two gender-specific groups. Participants will be able to choose which group they identify with (boy or girl). This is to increase acceptability within the Muslim culture.