OBJECTIVE

To investigate whether a form of advance agreement for people with severe mental illness can reduce the use of inpatient services and compulsory admission or treatment.

DESIGN

Single blind randomised controlled trial, with randomisation of individual patients. The investigator was blind to allocation.

SETTING

Eight community mental health teams in southern England.

PARTICIPANTS

160 people with an operational diagnosis of psychotic illness or non-psychotic bipolar disorder who had experienced a hospital admission within the previous two years.

INTERVENTION

The joint crisis plan was formulated by the patient, care coordinator, psychiatrist, and project worker and contained contact information, details of mental and physical illnesses, treatments, indicators for relapse, and advance statements of preferences for care in the event of future relapse.

MAIN OUTCOME MEASURES

Admission to hospital, bed days, and use of the Mental Health Act over 15 month follow up.

RESULTS

Use of the Mental Health Act was significantly reduced for the intervention group, 13% (10/80) of whom experienced compulsory admission or treatment compared with 27% (21/80) of the control group (risk ratio 0.48, 95% confidence interval 0.24 to 0.95, P = 0.028). As a consequence, the mean number of days of detention (days spent as an inpatient while under a section of the Mental Health Act) for the whole intervention group was 14 compared with 31 for the control group (difference 16, 0 to 36, P = 0.04). For those admitted under a section of the Mental Health Act, the number of days of detention was similar in the two groups (means 114 and 117, difference 3, -61 to 67, P = 0.98). The intervention group had fewer admissions (risk ratio 0.69, 0.45 to 1.04, P = 0.07). There was no evidence for differences in bed days (total number of days spent as an inpatient) (means 32 and 36, difference 4, -18 to 26, P = 0.15 for the whole sample; means 107 and 83, difference -24, -72 to 24, P = 0.39 for those admitted).

CONCLUSIONS

Use of joint crisis plans reduced compulsory admissions and treatment in patients with severe mental illness. The reduction in overall admission was less. This is the first structured clinical intervention that seems to reduce compulsory admission and treatment in mental health services.