Published online by Cambridge University Press: 27 March 2020
The original psychometric evaluation of the CAN was published in 1995, and the paper reporting this evaluation is included as Appendix 8. In brief, the selection of items to be included in the CAN-R was guided by validity studies, including surveys of people living with severe mental health problems and of mental health professionals. The psychometric evaluation of CAN-R involved people with severe mental health problems attending an inner-city mental health service, and their mental health professional. The mean total number of needs identified by staff (n = 60) was 7.55 and by service users (n = 49) was 8.64. Inter-rater reliability of the total number of needs identified by staff were 0.99, and test–retest reliability was 0.78. The percentage complete agreement on individual items ranged from 81.6 to 100% (inter-rater) and 58.1 to 100% (test–retest).