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Risk factors associated with purchasing pesticide from shops for self-poisoning: a protocol for a population-based case–control study
  1. Manjula Weerasinghe1,2,
  2. Flemming Konradsen2,3,
  3. Michael Eddleston2,3,4,
  4. Melissa Pearson2,4,
  5. David Gunnell5,
  6. Keith Hawton6,
  7. Shaluka Jayamanne2,7,
  8. Chathurani Pabasara2,
  9. Tharidu Jayathilaka2,
  10. Kalpani Dissanayaka2,
  11. Sandamali Rajapaksha2,
  12. Prasanna Thilakarathna2,
  13. Suneth Agampodi1
  1. 1Department of Community Medicine, Faculty of Medicine & Allied Sciences, Rajarata University of Sri Lanka, Saliyapura, Anuradhapura, Sri Lanka
  2. 2Faculty of Medicine, South Asian Clinical Toxicology Research Collaboration (SACTRC), University of Peradeniya, Peradeniya, Sri Lanka
  3. 3Department of Public Health, Faculty of Sciences, University of Copenhagen, Copenhagen, Denmark
  4. 4Pharmacology, Toxicology and Therapeutics, University of Edinburgh, Edinburgh, UK
  5. 5School of Social and Community Medicine, University of Bristol, Bristol, UK
  6. 6Department of Psychiatry, Centre for Suicide Research, University of Oxford, Oxford, UK
  7. 7Department of Medicine, Faculty of Medicine, University of Kelaniya, Ragama, Sri Lanka
  1. Correspondence to Professor Michael Eddleston; eddlestonm{at}yahoo.com

Abstract

Introduction Pesticide self-poisoning is one of the most frequently used methods of suicide worldwide, killing over 300 000 people annually. Around 15–20% of pesticide self-poisonings occur soon after the person has bought the pesticide from a shop. We aim to determine the characteristics of individuals who purchase pesticides directly from shops and how they differ from individuals who access pesticides from other sources such as home, home garden or farmland. This information will help inform possible vendor/shop-based intervention strategies aimed at reducing access to pesticides used for self-harm.

Methods and analysis This study will investigate risk factors associated with purchasing pesticides for acts of self-poisoning from pesticide shops, including cases identified over a 9-month period using a population-based case–control group approach. Four interviewer-administered data collection tools will be used for this study: a semistructured questionnaire, Beck Suicidal Intent Scale (SIS), Clinical Interview Schedule—Sinhalese version (CIS-Sn) and Alcohol Use Disorders Identification Test (AUDIT). Each case (expected n=33) will be compared with two groups of individuals: (1) those who have self-poisoned using pesticides from the home, home garden or farmland and (2) those who bought pesticides from the same shops as the above cases, but not did not self-poison. Logistic regression models will be used to identify risk factors of purchasing pesticides for self-poisoning from shops.

Ethics and dissemination The study has received ethical approval from the Ethical Review Committee of the Faculty of Medicine and Allied Sciences, Rajarata University of Sri Lanka. A sensitive data collection technique will be used and ethical issues will be considered throughout the study. Results will be disseminated in scientific peer-reviewed articles.

  • SOCIAL MEDICINE
  • PREVENTIVE MEDICINE
  • PUBLIC HEALTH

This is an Open Access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/

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