Background: The English Improving Access to Psychological Therapies (IAPT) initiative aims to make evidence-based psychological therapies for depression and anxiety disorder more widely available in the National Health Service (NHS). 32 IAPT services based on a stepped care model were established in the first year of the programme. We report on the reliable recovery rates achieved by patients treated in the services and identify predictors of recovery at patient level, service level, and as a function of compliance with National Institute of Health and Care Excellence (NICE) Treatment Guidelines. Method: Data from 19,395 patients who were clinical cases at intake, attended at least two sessions, had at least two outcomes scores and had completed their treatment during the period were analysed. Outcome was assessed with the patient health questionnaire depression scale (PHQ-9) and the anxiety scale (GAD-7). Results: Data completeness was high for a routine cohort study. Over 91 % of treated patients had paired (pre-post) outcome scores. Overall, 40.3 % of patients were reliably recovered at posttreatment, 63.7 % showed reliable improvement and 6.6 % showed reliable deterioration. Most patients received treatments that were recommended by NICE. When a treatment not recommended by NIC
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