Community Treatment Orders on trial: the OCTET RCT

Compulsory community and involuntary outpatient treatment for people with severe mental disorders

BACKGROUND

It is controversial whether compulsory community treatment (CCT) for people with severe mental illness (SMI) reduces health service use, or improves clinical outcome and social functioning.

OBJECTIVES

To examine the effectiveness of compulsory community treatment (CCT) for people with severe mental illness (SMI).

SEARCH METHODS

We searched the Cochrane Schizophrenia Group's Study-Based Register of Trials (2003, 2008, 2012, 8 November 2013, 3 June 2016). We obtained all references of identified studies and contacted authors where necessary.

SELECTION CRITERIA

All relevant randomised controlled clinical trials (RCTs) of CCT compared with standard care for people with SMI (mainly schizophrenia and schizophrenia-like disorders, bipolar disorder, or depression with psychotic features). Standard care could be voluntary treatment in the community or another pre-existing form of CCT such as supervised discharge.

DATA COLLECTION AND ANALYSIS

Authors independently selected studies, assessed their quality and extracted data. We used Cochrane's tool for assessing risk of bias. For binary outcomes, we calculated a fixed-effect risk ratio (RR), its 95% confidence interval (95% CI) and, where possible, the number needed to treat for an additional beneficial outcome (NNTB). For continuous outcomes, we calculated a fixed-effect mean difference (MD) and its 95% CI. We used the GRADE approach to create 'Summary of findings' tables for key outcomes and assessed the risk of bias of these findings.

MAIN RESULTS

The review included three studies (n = 749). Two were based in the USA and one in England. The English study had the least bias, meeting three out of the seven criteria of Cochrane's tool for assessing risk of bias. The two other studies met only one criterion, the majority being rated unclear.Two trials from the USA (n = 416) compared court-ordered 'outpatient commitment' (OPC) with entirely voluntary community treatment. There were no significant differences between OPC and voluntary treatment by 11 to 12 months in any of the main health service or participant level outcome indices: service use - readmission to hospital (2 RCTs, n= 416, RR 0.98, 95% CI 0.79 to 1.21, low-quality evidence); service use - compliance with medication (2 RCTs, n = 416, RR 0.99, 95% CI 0.83 to 1.19, low-quality evidence); social functioning - arrested at least once (2 RCTs, n = 416, RR 0.97, 95% CI 0.62 to 1.52, low-quality evidence); social functioning - homelessness (2 RCTs, n = 416, RR 0.67, 95% CI 0.39 to 1.15, low-quality evidence); or satisfaction with care - perceived coercion (2 RCTs, n = 416, RR 1.36, 95% CI 0.97 to 1.89, low-quality evidence). However, one trial found the risk of victimisation decreased with OPC (1 RCT, n = 264, RR 0.50, 95% CI 0.31 to 0.80, low-quality evidence).The other RCT compared community treatment orders (CTOs) with less intensive and briefer supervised discharge (Section 17) in England. The study found no difference between the two groups for either the main health service outcomes including readmission to hospital by 12 months (1 RCT, n = 333, RR 0.99, 95% CI 0.74 to 1.32, moderate-quality evidence), or any of the participant level outcomes. The lack of any difference between the two groups persisted at 36 months' follow-up.Combining the results of all three trials did not alter these results. For instance, participants on any form of CCT were no less likely to be readmitted than participants in the control groups whether on entirely voluntary treatment or subject to intermittent supervised discharge (3 RCTs, n = 749, RR for readmission to hospital by 12 months 0.98, 95% CI 0.82 to 1.16 moderate-quality evidence). In terms of NNTB, it would take 142 orders to prevent one readmission. There was no clear difference between groups for perceived coercion by 12 months (3 RCTs, n = 645, RR 1.30, 95% CI 0.98 to 1.71, moderate-quality evidence).There were no data for adverse effects.

AUTHORS' CONCLUSIONS

These review data show CCT results in no clear difference in service use, social functioning or quality of life compared with voluntary care or brief supervised discharge. People receiving CCT were, however, less likely to be victims of violent or non-violent crime. It is unclear whether this benefit is due to the intensity of treatment or its compulsory nature. Short periods of conditional leave may be as effective (or non-effective) as formal compulsory treatment in the community. Evaluation of a wide range of outcomes should be considered when this legislation is introduced. However, conclusions are based on three relatively small trials, with high or unclear risk of blinding bias, and low- to moderate-quality evidence. In addition, clinical trials may not fully reflect the potential benefits of this complex intervention.

Compulsory community and involuntary outpatient treatment for people with severe mental disorders

BACKGROUND

There is controversy as to whether compulsory community treatment (CCT) for people with severe mental illness (SMI) reduces health service use, or improves clinical outcome and social functioning.

OBJECTIVES

To examine the effectiveness of CCT for people with SMI.

SEARCH METHODS

We searched the Cochrane Schizophrenia Group's Trials Register and Science Citation Index (2003, 2008, and 2012). We obtained all references of identified studies and contacted authors where necessary. We further updated this search on the 8 November 2013.

SELECTION CRITERIA

All relevant randomised controlled clinical trials (RCTs) of CCT compared with standard care for people with SMI (mainly schizophrenia and schizophrenia-like disorders, bipolar disorder, or depression with psychotic features). Standard care could be voluntary treatment in the community or another pre-existing form of compulsory community treatment such as supervised discharge.

DATA COLLECTION AND ANALYSIS

Review authors independently selected studies, assessed their quality and extracted data. We used The Cochrane Collaboration's tool for assessing risk of bias. For binary outcomes, we calculated a fixed-effect risk ratio (RR), its 95% confidence interval (CI) and, where possible, the weighted number needed to treat statistic (NNT). For continuous outcomes, we calculated a fixed-effect mean difference (MD) and its 95% CI. We used the GRADE (Grading of Recommendations Assessment, Development and Evaluation) approach to create a 'Summary of findings' table for outcomes we rated as important and assessed the risk of bias of included studies.

MAIN RESULTS

All studies (n=3) involved patients in community settings who were followed up over 12 months (n = 752 participants).Two RCTs from the USA (total n = 416) compared court-ordered 'Outpatient Commitment' (OPC) with voluntary community treatment. OPC did not result in significant differences compared to voluntary treatment in any of the main outcome indices: health service use (2 RCTs, n = 416, RR for readmission to hospital by 11-12 months 0.98 CI 0.79 to 1.21, low grade evidence); social functioning (2 RCTs, n = 416, RR for arrested at least once by 11-12 months 0.97 CI 0.62 to 1.52, low grade evidence); mental state; quality of life (2 RCTs, n = 416, RR for homelessness 0.67 CI 0.39 to 1.15, low grade evidence) or satisfaction with care (2 RCTs, n = 416, RR for perceived coercion 1.36 CI 0.97 to 1.89, low grade evidence). However, risk of victimisation decreased with OPC (1 RCT, n = 264, RR 0.50 CI 0.31 to 0.80). Other than perceived coercion, no adverse outcomes were reported. In terms of numbers needed to treat (NNT), it would take 85 OPC orders to prevent one readmission, 27 to prevent one episode of homelessness and 238 to prevent one arrest. The NNT for the reduction of victimisation was lower at six (CI 6 to 6.5).One further RCT compared community treatment orders (CTOs) with less intensive supervised discharge in England and found no difference between the two for either the main outcome of readmission (1 RCT, n = 333, RR for readmission to hospital by 12 months 0.99 CI 0.74 to 1.32, medium grade evidence), or any of the secondary outcomes including social functioning and mental state. It was not possible to calculate the NNT. The English study met three out of the seven criteria of The Cochrane Collaboration's tool for assessing risk of bias, the others only one, the majority being rated unclear.

AUTHORS' CONCLUSIONS

CCT results in no significant difference in service use, social functioning or quality of life compared with standard voluntary care. People receiving CCT were, however, less likely to be victims of violent or non-violent crime. It is unclear whether this benefit is due to the intensity of treatment or its compulsory nature. Short periods of conditional leave may be as effective (or non-effective) as formal compulsory treatment in the community. Evaluation of a wide range of outcomes should be considered when this legislation is introduced. However, conclusions are based on three relatively small trials, with high or unclear risk of blinding bias, and evidence we rated as low to medium quality.

Compulsory community and involuntary outpatient treatment for people with severe mental disorders

BACKGROUND

There is controversy as to whether compulsory community treatment for people with severe mental illnesses reduces health service use, or improves clinical outcome and social functioning. Given the widespread use of such powers it is important to assess the effects of this type of legislation.

OBJECTIVES

To examine the clinical and cost effectiveness of compulsory community treatment for people with severe mental illness.

SEARCH STRATEGY

We undertook searches of the Cochrane Schizophrenia Group Register 2003, 2008, and Science Citation Index. We obtained all references of identified studies and contacted authors of each included study.

SELECTION CRITERIA

All relevant randomised controlled clinical trials of compulsory community treatment compared with standard care for people with severe mental illness.

DATA COLLECTION AND ANALYSIS

We reliably selected and quality assessed studies and extracted data. For binary outcomes, we calculated a fixed effects risk ratio (RR), its 95% confidence interval (CI) and, where possible, the weighted number needed to treat/harm statistic (NNT/H).

MAIN RESULTS

We identified two randomised clinical trials (total n = 416) of court-ordered 'Outpatient Commitment' (OPC) from the USA. We found little evidence that compulsory community treatment was effective in any of the main outcome indices: health service use (2 RCTs, n = 416, RR for readmission to hospital by 11-12 months 0.98 CI 0.79 to 1.2); social functioning (2 RCTs, n = 416, RR for arrested at least once by 11-12 months 0.97 CI 0.62 to 1.52); mental state; quality of life (2 RCTs, n = 416, RR for homelessness 0.67 CI 0.39 to 1.15) or satisfaction with care (2 RCTs, n = 416, RR for perceived coercion 1.36 CI 0.97 to 1.89). However, risk of victimisation may decrease with OPC (1 RCT, n = 264, RR 0.5 CI 0.31 to 0.8). In terms of numbers needed to treat (NNT), it would take 85 OPC orders to prevent one readmission, 27 to prevent one episode of homelessness and 238 to prevent one arrest. The NNT for the reduction of victimisation was lower at six (CI 6 to 6.5). A new search for trials in 2008 did not find any new trials that were relevant to this review.

AUTHORS' CONCLUSIONS

Compulsory community treatment results in no significant difference in service use, social functioning or quality of life compared with standard care. People receiving compulsory community treatment were, however, less likely to be victims of violent or non-violent crime. It is unclear whether this benefit is due to the intensity of treatment or its compulsory nature. Evaluation of a wide range of outcomes should be considered when this type of legislation is introduced.