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Ambient particulate matter as a risk factor for suicide

 Changsoo Kim  ;  Sang Hyuk Jung  ;  Dae Ryong Kang  ;  Hyeon Chang Kim  ;  Ki Tae Moon  ;  Nam Wook Hur  ;  Dong Chun Shin  ;  Il Suh 
 AMERICAN JOURNAL OF PSYCHIATRY, Vol.167(9) : 1100-1107, 2010 
Journal Title
Issue Date
Adult ; Air Pollution/adverse effects* ; Air Pollution/statistics & numerical data ; Cardiovascular Diseases/epidemiology ; Cardiovascular Diseases/mortality ; Cause of Death/trends ; Cities/epidemiology ; Cities/statistics & numerical data ; Female ; Humans ; Logistic Models ; Male ; Meteorological Concepts ; Middle Aged ; Particle Size ; Particulate Matter/adverse effects* ; Particulate Matter/analysis ; Republic of Korea/epidemiology ; Risk Factors ; Seasons ; Social Class ; Suicide/statistics & numerical data* ; Suicide/trends
OBJECTIVE: The authors assessed the relationship between exposure to ambient particulate matter and suicide in urban settings during a 1-year period. METHOD: The association between particulate matter and suicide was determined using a time-stratified case-crossover approach in which subjects served as their own controls. All suicide cases (4,341) in 2004 that occurred in seven cities in the Republic of Korea were included. Hourly mean concentrations of particulate matter < or =10 microm in aerodynamic diameter (at 106 sites in the seven cities) and particulate matter < or =2.5 microm in aerodynamic diameter (at 13 sites in one city) were measured. The percent increase in suicide risk associated with an interquartile range increase in particulate matter was determined by conditional logistic regression analysis after adjusting for national holidays and meteorological factors. Subgroup analysis was performed after stratification by underlying disease (cardiovascular disease, diabetes mellitus, chronic obstructive pulmonary disease, cancer, and psychiatric illness). RESULTS: The largest associations were a 9.0% increase (95% CI=2.4-16.1) and a 10.1% (95% CI=2.0-19.0) increase in suicide risk related to an interquartile range increase in particulate matter < or =10 microm (average of 0 to 2 days prior to the day of suicide) and particulate matter < or =2.5 microm (1 day prior to the day of suicide), respectively. Among individuals with cardiovascular disease, a significant association between particulate matter < or =10 microm (average of 0 to 2 days prior to the day of suicide) and suicide was observed (18.9%; 95% CI=3.2-37.0). CONCLUSIONS: Conclusions: A transient increase in particulate matter was associated with increased suicide risk, especially for individuals with preexisting cardiovascular disease
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1. College of Medicine (의과대학) > Dept. of Preventive Medicine (예방의학교실) > 1. Journal Papers
Yonsei Authors
Kim, Chang Soo(김창수) ORCID logo https://orcid.org/0000-0002-5940-5649
Kim, Hyeon Chang(김현창) ORCID logo https://orcid.org/0000-0001-7867-1240
Suh, Il(서일) ORCID logo https://orcid.org/0000-0002-9689-7849
Shin, Dong Chun(신동천) ORCID logo https://orcid.org/0000-0003-4252-2280
Hur, Nam Wook(허남욱)
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