IntroductionDuration of untreated psychosis (time between the onset of symptoms and start of treatment) is considered the strongest predictor of symptom severity and outcome. Integrated care pathways that prescribe timeframes around access and interventions can potentially improve quality of care.Methods and analysisA multicentre mixed methods study to assess feasibility, acceptability, effectiveness and analysis of direct costs of an integrated care pathway for psychosis. A pragmatic, non-randomised, controlled trial design is used to compare the impact of Treatment and Recovery In PsycHosis (TRIumPH; Intervention) by comparison between NHS organisations that adopt TRIumPH and those that continue with care as usual (Control). Quantitative and qualitative methods will be used. We will use routinely collected quantitative data and study-specific questionnaires and focus groups to compare service user outcomes, satisfaction and adherence to intervention between sites that adopt TRIumPH versus sites that continue with usual care pathways.Setting4 UK Mental health organisations. Two will implement TRIumPH whereas two will continue care as usual.ParticipantsStaff, carers, individuals accepted to early intervention in psychosis teams in participating organisations for the study period.InterventionTRIumPH—Integrated Care Pathway for psychosis that has a holistic approach and prescribes time frames against interventions; developed using intelligence from data; co-produced with patients, carers, clinicians and other stakeholders.OutcomesFeasibility will be assessed through adherence to the process measures. Satisfaction and acceptability will be assessed using questionnaires and focus groups. Effectiveness will be assessed through data collection and evaluation of patient outcomes, including clinical, functional and recovery outcomes, physical health, acute care use. Outcome measures will be assessed at baseline, 12 and 24 months to measure whether there is an effect and if so, whether this is sustained over time. Outcomes measures at the adopter sites will be compared to their own baseline and against comparator sites.Ethics and disseminationEthics approval was obtained from East of Scotland Research Ethics Service (REC Ref no: LR/15/ES/0091). The results will be disseminated through publications, conference presentations, reports to the organisation.Study registrationUK Clinical Research Network Portfolio: 19187.

The HAO demonstrates satisfactory psychometric properties. Co-production of the measure confers clinical credibility. The brevity of the tool means it can be incorporated into routine clinical practice to drive improvements in service quality.