The impact of supply reduction through alcohol management plans on serious injury in remote indigenous communities in remote Australia: A ten-year analysis using data from the royal flying doctor service

Aims: To assess the impact of supply reduction through Alcohol Management Plans (AMP) on the rate of serious injuries in four indigenous communities in remote Australia. Methods: An ecological study used the database of the Royal Flying Doctor Service (RFDS) to calculate trauma retrieval rates for 8 years pre- and 2 years post-AMP in four remote communities covering a period from 1 January 1995 to 24 November 2005. All serious injuries in these communities required aero-medical retrieval. Results: Serious injury resulted in a total of 798 retrievals during the observation period. One-sided analysis of variance for repeated measurements over the 10 years demonstrated a significant (P = 0.021) decrease of injury retrieval rates after the introduction of the AMP. Similarly, a comparison of linear trends of injury retrieval rates pre- and post-AMP also resulted in a significant decrease (P = 0.022; one-sided paired t-test). Comparisons of injury retrieval rates of just the 2 years pre- and post-AMP also revealed a significant reduction (P = 0.001; paired t-test), with an averaged 52% decline. Identical comparisons of retrieval rates for causes other than injury revealed no significant changes. Conclusion: This impact evaluation provides evidence that AMP was effective in reducing serious injury in the assessed indigenous communities.