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The British Journal of Psychiatry (2000) 176: 473-478
© 2000 The Royal College of Psychiatrists

Reliability and validity of the CANDID - a needs assessment instrument for adults with learning disabilities and mental health problems

KIRIAKOS XENITIDIS, MRCPsych, GRAHAM THORNICROFT, PhD, MORVEN LEESE, PhD and MIKE SLADE, PhD

Section of Community Psychiatry (PRiSM), Institute of Psychiatry, London

MARIA FOTIADOU, MRCPsych

Lewisham & Guy's NHS Trust, Ladywell Unit, Lewisham Hospital, London

HELEN PHILP, BSc and JANE SAYER, MSc

Maudsley Centre for Behavioural Disorders, the Bethlem Royal Hospital Beckenham, Kent

ELIZABETH HARRIS, DipSW

The Green, Frant, Tunbridge, Wells, Kent

DONNA McGEE, RMN

Ravensbourne Trust, Farnborough, Kent

DECLAN MURPHY, MRCPsych

Department of Psychological Medicine, Institute of Psychiatry, London

Declaration of interest K.X. was supported by the National Health Service Executive (South Thames).

The CANDID is available from the Section of Community Psychiatry (PRiSM), Institute of Psychiatry, De Crespigny Park, London SE5 8AF

Correspondence: K. Xenitidis, Section of Community Psychiatry (PRiSM), Institute of Psychiatry, De Crespigny Park, London SE5 8AF

Background People with learning disabilities and mental health problems have complex needs. Care should be provided according to need.

Aim To develop a standardised needs-assessment instrument for adults with learning disabilities and mental health problems.

Method The Camberwell Assessment of Need for Adults with Developmental and Intellectual Disabilities (CANDID) was developed by modifying the Camberwell Assessment of Need (CAN). Concurrent validity was tested using the Global Assessment of Functioning (GAF) and the Disability Assessment Schedule (DAS). Test—retest and interrater reliability were investigated using 40 adults with learning disabilities and mental health problems.

Results CANDID scores were significantly correlated with both DAS (P < 0.05) and GAF scores (P < 0.01). Correlation coefficients for interrater reliability were 0.93 (user), 0.90 (carer), and 0.97 (staff ratings); for test—retest reliability they were 0.71, 0.69 and 0.86 respectively. Mean interview duration was less than 30 minutes.

Conclusions The CANDID is a brief, valid and reliable needs assessment instrument for adults with learning disabilities and mental health problems.




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