QUESTION, PERSUADE, REFER (QPR) IS EFFECTIVE AND EVIDENCE-BASED.
The recognition of suicide as an imminent concern has led to the development of evidence-based prevention programs to decrease suicide-related mortality. One program, Question, Persuade, Refer (QPR), has become the most widely-distributed gatekeeper training program in the world. Research indicates both short- and long-term positive outcomes in knowledge and self-efficacy, supporting use of QPR. Independent research reviewers of published studies for National Registry of Evidence-based Practice and Policies found that trained gatekeepers have increased knowledge, confidence and gatekeeper skills per these measures:

Declarative & perceived knowledge
Self-efficacy
Diffusion of Gatekeeper training information
Gatekeeper skills (ability to engage in active listening, ask clarifying questions,
make an appropriate referral)

For more information, check out the Hope Squad website.

References: https://qprinstitute.com/research-theory
Cross, W.F., Seaburn, D., Gibbs, D., Schmeelk-Cone, K. et al. (2011);Matthieu, M.M., Cross, W., Batres. A.R., Flora et al.
(2008);Wyman, P.A., Brown, C.H. Inman, J., Cross W., et al (2008).
Definition: According to the Surgeon General’s National Strategy for Suicide Prevention (2001), “key gatekeepers” are
“people who regularly come into contact with individuals or families in distress”
Reference: Litteken, Clay & Sale, Elizabeth. (2018). Long-Term Effectiveness of the Question, Persuade, Refer (QPR)
Suicide Prevention Gatekeeper Training Program: Lessons from Missouri. Community Mental Health Journal. 54. 1-11.
10.1007/s10597-017-0158-z.