An impact evaluation of the Scottish take-home naloxone programme

Objectives: To describe the change in opioid-related deaths (ORDs) recorded across Scotland since National ‘Take Home’ Naloxone Programme (NNP) implementation between baseline pre-implementation (2006 – 2010) and 10-year post implementation (2011 – 2020) periods. To describe and contextualise the change in ORDs within 4 weeks of prison release and hospital discharge across the same pre- and post-implementation periods and evaluate the reach of naloxone to people at risk of opioid overdose during this period.
Methods: Descriptive statistics as part of a pre-post secondary contribution analysis approach. The Better Evaluation Rainbow Framework for impact evaluation was utilised and data was obtained from official statistics and monitoring reports via Public Health Scotland.
Results: An increase in total ORDs nationwide was observed post-NNP implementation. In 2006–10, 9·8 % of ORDs (193 of 1970) were in people released from prison within 4 weeks of death, whereas only 4·4 % of ORDs (281 of 6439) in 2011–20 followed prison release, representing a 55 % reduction. A similar reduction in ORDs following hospital discharge was not observed. Cumulative reach of take-home naloxone to individuals at risk of opioid overdose across the post-implementation period was 58 %.
Conclusions: Implementation of the Scottish NNP has coincided with an increase in total ORDs nationwide, increased availability of take-home naloxone for management of opioid overdose and a reduction in the proportion of opioid-related fatalities among recently released prisoners. Unfortunately, the proportion ORDs after hospital discharge remain unchanged suggesting that this population may benefit from further research and additional distribution approaches.