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Association between the accessibility to lethal methods and method-specific suicide rates: An ecological study in
1Department of Psychiatry, Chi-Mei Medical Center, Tainan, Taiwan.
The Journal of Clinical Psychiatry
|August 8, 2006
Summary
Restricting access to lethal suicide methods like pesticides and high places is linked to lower suicide rates. This study found strong associations between method availability and method-specific suicide rates in Taiwan.
Area of Science:
- Public Health
- Epidemiology
- Environmental Health
Background:
- Suicide prevention strategies often focus on reducing access to lethal means.
- Understanding the relationship between environmental factors and method-specific suicide rates is crucial for targeted interventions.
Purpose of the Study:
- To investigate the association between the availability of lethal suicide methods and method-specific suicide rates at the city/county level in Taiwan.
- To identify environmental factors correlated with specific suicide methods.
Main Methods:
- Calculated age-adjusted and age-specific suicide rates for 23 Taiwanese cities/counties (1999-2003).
- Employed partial correlation coefficients to assess associations between agricultural population proportion, high-rise living proportion, and suicide rates (poisoning, jumping, hanging), adjusting for unemployment and depression prevalence.
Main Results:
- A significant positive correlation (r=0.77, p < .001) was found between the proportion of agricultural population and suicide rates from solids/liquids poisoning.
- A significant positive correlation (r=0.73, p < .001) was observed between the proportion of households on the sixth floor or above and suicide rates from jumping.
- No significant correlations were found for hanging suicide rates with either agricultural population or high-rise living.
Conclusions:
- Strong positive associations exist between the availability of lethal methods and method-specific suicide rates.
- Controlling access to pesticides and securing high buildings (e.g., fencing, window guards) are recommended as effective suicide prevention measures.
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