Some costs and quantities were reported separately. A societal perspective was used. Costs included drugs and dispensing, non-psychiatric hospitaland psychiatric treatment, GP and CPN resources, local authority social services, social security and rent, patients' and relatives' travel costs, patients' personal expenses. Estimate of costs were based on actual data (GP and CPN records and patients' questionnaire). Drugs and dispensing prices were derived from the Monthly Index of Medical Specialities; GP resources were costed using DoH data. 1988 costs data were used.