evidence for particular approaches, where the gaps are in our knowledge, and how we can fill them.Suicide rates have increased by 60 per cent worldwide in the past 45 years, with deaths by suicide projected to reach 1.5 million by the year 2020. Despite millions being spent on suicide prevention activities, little is known about their effectiveness: As the US Suicide Prevention Action Network (SPAN) reported, The single greatest obstacle to the effective prevention of suicide is the lack of evaluation research.

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