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Using speech characteristics to classify suicide risk in telehealth callers

Using speech characteristics to classify low versus high risk of suicide in 64 male and female telehealth counselling calls

Status
Completed
Phases
Unknown
Study type
Observational
Source
ANZCTR
Registry ID
ACTRN12622000486729
Acronym
RELIANCE (REaL tIme ANalysis of voiCE)
Enrollment
840
Registered
2022-03-28
Start date
2021-07-08
Completion date
2021-07-15
Last updated
2022-04-04

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Brief summary

The primary hypothesis of the study is to automatically classify a sample of call recordings obtained from our telehealth partners according to risk of suicide. Risk of suicide is defined as low (levels 1 and 2 on the Columbia Suicide Severity Rating scale, CSSR-S) and High (levels 5 and 6 on the CSSR-R). Call recordings will be sourced from two industry partners including On The Line who administer the Suicide Call Back service and the Australian Federal Police who administer 000 emergency services in the Canberra, Australia region.

Interventions

Duration of observation is 1/7/2020 - 30/6/21 Call recordings made to a national telehealth suicide prevention service will be observed throughout the duration of each call. Callers identified as being at high risk of imminent suicide will be identified. Callers will by identified via screening questions ("are you at risk of suicide", and "do you have a plan that you will carry out"). High risk of suicide status will be initially assigned by the responding counsellor using an organisational risk

Duration of observation is 1/7/2020 - 30/6/21 Call recordings made to a national telehealth suicide prevention service will be observed throughout the duration of each call. Callers identified as being at high risk of imminent suicide will be identified. Callers will by identified via screening questions ("are you at risk of suicide", and "do you have a plan that you will carry out"). High risk of suicide status will be initially assigned by the responding counsellor using an organisational risk framework, then confirmed retrospectively by a team of Associate Researchers and finally re-confirmed by the student investigator, using the Columbia Suicide Severity Risk rating (ratings 5 and 6). Calls are made form private homes, and in public spaces.

Sponsors

Swinburne University of Technology
Lead SponsorUniversity

Eligibility

Sex/Gender
All
Age
18 Years to No maximum
Healthy volunteers
Yes

Inclusion criteria

English speaking; call made within Australia; 18+ years

Exclusion criteria

Calls made via teletext or requiring third party translation; speech difficulties (motor articulation); intoxication.

Outcome results

None listed

Source: ANZCTR · Data processed: Feb 11, 2026