Reliability of the Camberwell Assessment of Need - European Version - EPSILON study 6

Background The five-country European Psychiatric Services:Inputs Linked to Outcome Domains and Needs (EPSILON) Study aimed to develop standardised and reliable outcome instruments for people with schizophrenia. This paper rep orts reliability findings for the Camberwell Assessment of Need - European Version (CAN - EU). Method The CAN - EU was administered in each country, at two points in time to assess test-retest reliability. and was rated by two interviewers at th e first administration. Cronbach's alpha, test-retest reliability and inter rater reliability were compared between the five sites. Reliability coeffic ients and standard errors of measurement for summary scores were estimated. Results Sites varied in levels and spread of needs. Alphas were 0.48, 0.58 and 0.64 for total, met and unmet needs respectively. Test-retest reliabili ty estimates, pooled over sites, were 0.85 for the total needs. 0.69 for me t needs and 0.78 for unmet needs. Pooled estimates for interrater reliabili ty were higher. at 0.94, 0.85 and 0.79 for total, met and unmet needs respe ctively. There were statistically significant differences in interrater rel iability between sites. Conclusion The results confirm the feasibility of using CAN - EU across sit es in Europe and its psychometric adequacy. Declaration of interest No conflict of interest. Funding detailed in Acknow ledgements.