Journal of Public Health Advance Access originally published online on April 28, 2006
Journal of Public Health 2006 28(2):88-95; doi:10.1093/pubmed/fdl009
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The prevalence of problem drug misuse in a rural county of England
Richard Holland, Senior Lecturer in Public Health Medicine, School of Medicine, Health Policy & Practice, University of East Anglia, Norwich, NR4 7TJ, UK1
Roberto Vivancos, Honorary Lecturer, School of Medicine, Health Policy & Practice, University of East Anglia1
Vivienne Maskrey, Research Associate, School of Medicine, Health Policy & Practice, University of East Anglia1
Julie Sadler, Medical Statistician (freelance) Ipswich [previously at UEA]1
Daphne Rumball, Consultant Addictions Psychiatrist, Norfolk & Waveney Mental Health Partnership, Norwich, Norfolk NR2 2PA, UK2
Ian Harvey, Professor of Epidemiology and Public Health, School of Medicine, Health Policy & Practice, University of East Anglia1
Louise Swift, Medical Statistician, University of East Anglia, School of Medicine, Health Policy & Practice, University of East Anglia1
1 University of East AngliaSchool of Medicine, Health Policy and Practice, Norwich NR4 7TJ, UK
2 Norfolk & Waveney Mental Health Partnership, Norwich, Norfolk NR2 2PA, UK
Address correspondence to Richard Holland, E-mail: r.holland{at}uea.ac.uk
Previous capture-recapture studies have estimated the prevalence of problem drug misuse in urban areas. This study estimates the prevalence in a rural county, Norfolk, using data from four sources: drug treatment agencies, probation, the arrest referral service, and police (drug-related crime with/without acquisitive crime). Careful consideration was given to methods of matching datasets and sensitivity analyses involved altering matching rules and postcode criteria. Whilst it is recognised that acquisitive crime is often related to drug use, this is the first capture-recapture study to incorporate acquisitive crime data. In further sensitivity analyses the proportion of acquisitive crime assumed to be drug-related was varied from 2560%. The main analysis provided an estimated prevalence of problem drug use in Norfolk of 2.05% (95% confidence interval: 1.66%2.56%) for ages 1554 years, considerably higher than the 1.1% currently suggested for the UK. Sensitivity analyses based on varied matching and postcode criteria produced estimates ranging from 2.41%3.37%, suggesting our estimate may be conservative. Sensitivity analyses assuming that 2560% of acquisitive crimes were drug-related, produced estimates ranging from 2.02% to 5.73%, further supporting our main analysis. In conclusion, this study provides evidence that problem drug misuse is more prevalent in this rural population than previously thought.
Keywords: drug misuse, prevalence, capture-recapture, rural