• Jonathan Monk-Cunliffe, Rohan Borschmann, Alice Monk, Joanna O'Mahoney, Claire Henderson, Rachel Phillips, Jonathan Gibb, and Paul Moran.
• Centre for Academic Mental Health, Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK.
• Cochrane Db Syst Rev. 2022 Sep 26; 9 (9): CD009353CD009353.

BackgroundPeople diagnosed with borderline personality disorder (BPD) frequently present to healthcare services in crisis, often with suicidal thoughts or actions. Despite this, little is known about what constitutes effective management of acute crises in this population and what type of interventions are helpful at times of crisis. In this review, we will examine the efficacy of crisis interventions, defined as an immediate response by one or more individuals to the acute distress experienced by another individual, designed to ensure safety and recovery and lasting no longer than one month. This review is an update of a previous Cochrane Review examining the evidence for the effects of crisis interventions in adults diagnosed with BPD.ObjectivesTo assess the effects of crisis interventions in adults diagnosed with BPD in any setting.Search MethodsWe searched CENTRAL, MEDLINE, Embase, nine other databases and three trials registers up to January 2022. We also checked reference lists, handsearched relevant journal archives and contacted experts in the field to identify any unpublished or ongoing studies.Selection CriteriaRandomised controlled trials (RCTs) comparing crisis interventions with usual care, no intervention or waiting list, in adults of any age diagnosed with BPD.Data Collection And AnalysisWe used standard methodological procedures expected by Cochrane.Main ResultsWe included two studies with 213 participants. One study (88 participants) was a feasibility RCT conducted in the UK that examined the effects of joint crisis plans (JCPs) plus treatment as usual (TAU) compared to TAU alone in people diagnosed with BPD. The primary outcome was self-harm. Participants had an average age of 36 years, and 81% were women. Government research councils funded the study. Risk of bias was unclear for blinding, but low in the other domains assessed. Evidence from this study suggested that there may be no difference between JCPs and TAU on deaths (risk ratio (RR) 0.91, 95% confidence interval (CI) 0.06 to 14.14; 88 participants; low-certainty evidence); mean number of self-harm episodes (mean difference (MD) 0.30, 95% CI -36.27 to 36.87; 72 participants; low-certainty evidence), number of inpatient mental health nights (MD 1.80, 95% CI -5.06 to 8.66; 73 participants; low-certainty evidence), or quality of life measured using the EuroQol five-dimension questionnaire (EQ-5D; MD -6.10, 95% CI -15.52 to 3.32; 72 participants; very low-certainty evidence). The study authors calculated an Incremental Cost Effectiveness Ratio of GBP -32,358 per quality-adjusted life year (QALY), favouring JCPs, but they described this result as "hypothesis-generating only" and we rated this as very low-certainty evidence.  The other study (125 participants) was an RCT conducted in Sweden of brief admission to psychiatric hospital by self-referral (BA) compared to TAU, in people with self-harm or suicidal behaviour and three or more diagnostic criteria for BPD. The primary outcome was use of inpatient mental health services. Participants had an average age of 32 years, and 85% were women. Government research councils and non-profit foundations funded the study. Risk of bias was unclear for blinding and baseline imbalances, but low in the other domains assessed. The evidence suggested that there is no clear difference between BA and TAU on deaths (RR 0.49, 95% CI 0.05 to 5.29; 125 participants; low-certainty evidence), mean number of self-harm episodes (MD -0.03, 95% CI -2.26 to 2.20; 125 participants; low-certainty evidence), violence perpetration (RR 2.95, 95% CI 0.12 to 71.13; 125 participants; low-certainty evidence), or days of inpatient mental health care (MD 0.70, 95% CI -14.32 to 15.72; 125 participants; low-certainty evidence). The study suggested that BA may have little or no effect on the mean number of suicide attempts (MD 0.00, 95% CI -0.06 to 0.06; 125 participants; very low-certainty evidence). We also identified three ongoing RCTs that met our inclusion criteria. The results will be incorporated into future updates of this review.Authors' ConclusionsA comprehensive search of the literature revealed very little RCT-based evidence to inform the management of acute crises in people diagnosed with BPD. We included two studies of two very different types of intervention (JCP and BA). We found no clear evidence of a benefit over TAU in any of our main outcomes. We are very uncertain about the true effects of either intervention, as the evidence was judged low- and very low-certainty, and there was only a single study of each intervention. There is an urgent need for high-quality, large-scale, adequately powered RCTs on crisis interventions for people diagnosed with BPD, in addition to development of new crisis interventions.Copyright © 2022 The Cochrane Collaboration. Published by John Wiley & Sons, Ltd.

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