One-year outcome of an early intervention in psychosis service: a naturalistic evaluation

Aim: We conducted a 1-year prospective evaluation of an early intervention in psychosis service (Early Treatment and Home-based Outreach Service (ETHOS)) during its first 3 years of operation in South-west London, UK. Methods: All patients referred to ETHOS underwent structured assessments at baseline and at 1-year follow-up. In addition, hospitalization rates of ETHOS patients (intervention group) were compared with a non-randomized parallel cohort (comparison group) of first-episode patients treated by community mental health teams. Results: The Early Treatment and Home-based Outreach Service patients experienced significant improvements in symptomatic and functional outcomes, especially vocational recovery. The service received only a quarter of eligible patients from referring teams. ETHOS patients did not differ from the comparison group in number of admissions, inpatient days or detention rates. Although number of referrals increased over time, there was no evidence that patients were being referred earlier. Conclusions: There is now robust evidence for the effectiveness of specialist early intervention services. However, such services must be adequate resourced, including an early detection team and provision of their own inpatient unit