This goal of this research is to examine the efficacy and feasibility of starting a phone call follow-up program for individuals discharged to the community after presenting to the Crisis Response Centre (CRC), a standalone mental health facility in Winnipeg, with suicidal ideation or behaviours. Currently there is no worldwide gold standard for how best to follow-up with individuals following presentations to health services with suicidal ideation or behaviours, despite the period immediately after discharge from mental health services being identified as a period of increased risk for death by suicide (Chung et al., 2017; Steeg et al., 2012). This risk is higher still for individuals who specifically had suicidal ideation or behaviours as a component of their reason for presenting to mental health services (Chung et al., 2017). One strategy that has been employed to mitigate this risk is brief contact interventions (BCI), which involves following up with people through text, phone calls, or written messages. Research has shown that this type of follow-up is well-received by individuals and although some studies have found this strategy reduces the rates of suicidal behaviours during this high-risk period, the overall literature shows mixed results (Miller et al., 2017; Exbrayat et al., 2017; Cebria et al., 2016; Milner et al., 2015; Morthorst et al., 2012; Fleischmann et al., 2008; Cedereke et al., 2002).

Because the research on phone call follow up programs has been mixed, we will be conducting a brief trial to study the efficacy and feasibility of a phone call follow-up system in Winnipeg to inform whether or not this type of program would be of benefit to the community. In order to best study this, we will be conducting a randomized control trial for individuals who are discharged to the community after presenting to the CRC with a recent history of suicidal thoughts or behaviours. Participants will be randomized into either an intervention group or a control group. All participants will receive at least one and no more than five phone calls during the five-week period immediately following discharge from the CRC, and the content and timing of these phone calls will be different depending on which group a participant is randomized to. We will rely on both self-reported data, which will be collected in a formalized fashion, and data in the electronic medical records of participants to analyze this intervention. Our hypothesis is that the specific protocol we have designed to follow up with the intervention group will result in decreased suicidal thoughts and behaviours in the period immediately following discharge.

The proposed randomized control trial will occur over a three-month period at the Crisis Response Centre (CRC) in Winnipeg. The CRC serves as a standalone facility that offers 24/7 walk in assessment and treatment for adults with mental health crises, as well as referrals to mental health services. All individuals who present to the CRC and report any suicidal ideation or behaviour within the one week prior to their presentation will be considered eligible for the study. Further inclusion and exclusion criteria are outlined in the "Eligibility" section. A variety of employees at the CRC will be involved in different roles to assist with this research.

In current practice, all individuals are able to connect with Crisis Clinicians working at the CRC both in person and through the use of a telephone call to the Mobile Crisis Unit, which provides the capacity for Crisis Clinicians to both talk on the phone to individuals or leave the CRC and assess individuals offsite to support them. All individuals who connect with Crisis Clinicians in any of these capacities have a Mental Health Assessment (MHA) completed by Crisis Clinicians. All Crisis Clinicians are trained specifically in how to assess and assist individuals with suicidal thoughts or behaviours, therefore making them optimal individuals to assist in this research given their experience to support the safety of individuals in crisis.

Participants who present to the CRC, are deemed appropriate for participation in the study based on inclusion and exclusion criteria, and who are otherwise ready for discharge back into the community will be consented by the same Crisis Clinician who completed their MHA. Participants will be informed that they will receive no less than one and no more than five phone calls over the five weeks immediately following the date of their discharge from the CRC as part of this study, without informing them of the specific differences between the intervention and control groups. Individuals will decide prior to discharge whether they would like to participate, and those who choose to participate will provide a phone number that they can be contacted at and that messages can be left on.

Individuals who choose to participate will be randomized to either a control or intervention group based on a coin flip done by the Attendants (Front Desk Staff at the CRC). The Crisis Clinician will not be involved in the randomization process to prevent allocation bias. Once participants are randomized, they will be informed by the Attendants of the exact dates on which they should expect phone calls without revealing to the participant what group they have been randomized to, thereby blinding the participants. This blinding is possible because we have concealed the exact number and nature of phone calls that will occur for the two groups. Attendants will update a schedule after randomizing each participant with appointment times for all phone calls required for the study.

On each day, Team Leads will be responsible for reviewing the schedule and allocating all required phone calls between themselves and the Crisis Clinicians working that day. Crisis Clinicians will attempt to call participants a maximum of three times on the assigned day between 0800 and 2200. All Crisis Clinicians are provided with scripts to follow for phone calls based on which group they are calling and at what time. If Crisis Clinicians are unsuccessful at contacting the participant by the third attempt, they will leave a scripted voicemail offering support and encouraging the participant to call back. If at any point during phone conversations the Crisis Clinician has concerns about a participant's safety or suicide risk, this will be approached in the same way the Clinician would approach anyone who calls in to the Mobile Crisis Unit with suicidal ideation or behaviours.

Crisis Clinicians will record the outcome and content of all phone calls into the electronic medical record, including phone calls where they do and do not successfully talk with the participant. Throughout the study, Dr. Laura Sutherland will be reviewing the participants' electronic medical records with particular attention to mental health diagnoses, visit history during the study time, and the notes from all phone calls made. This information will be used to analyze all of the data in a deidentified fashion. Crisis Clinicians and Team Leads will also keep a daily tally of the total number of individuals considered appropriate for the study based on inclusion and exclusion criteria, and how many of these individuals decline participation in the study to further inform the analysis.

Inclusion Criteria:

1. Being discharged to the community from the Crisis Centre

2. At least 18 years old

3. Suicidal ideation or behaviour within one week of presentation to the CRC

   1. Suicidal ideation = thoughts of suicide or death, ranging from passive thoughts to organized plans
   2. Suicidal behaviour = suicide attempt, interrupted suicide attempt, aborted suicide attempt, suicide preparatory actions (eg. writing a suicide note, selling off/giving away all possessions)

Exclusion Criteria:

1. Medically or cognitively unable to participate
2. Having an insurmountable language barrier
3. Psychiatrist deems that this type of follow-up could be harmful for the patient
4. Living in an institutional setting
5. Patient being admitted to hospital/treatment facility as a result of their presentation to the Crisis Response Centre
6. Being enrolled in outreach/follow up program that would directly overlap with involvement in this study
7. No reliable access to phone

Crisis Clinicians who consent individuals for participation will be masked from randomization. The randomization process will be completed by a different staff member separate from the Crisis Clinician to prevent allocation bias.