Cyclic time patterns of death from suicide in northern Finland

Partonen, Timo; Haukka, Jari; Viilo, Kaisa; Hakko, Helinä; Pirkola, Sami; Isometsä, Erkki; Lönnqvist, Jouko; Särkioja, Terttu; Väisänen, Erkki; Räsänen, Pirkko

doi:10.1016/s0165-0327(02)00236-7

Cited by 53 publications

(39 citation statements)

References 29 publications

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“…temperature and sunshine, for the same group: men committing suicide by violent methods. 10,11,20,26,27 Therefore, this group should be a key component to understand the association of suicide with temperature in future research, at the individual level. Clinical practice can benefit from combining these outcomes with known psychiatric risk factors (e.g., mental illness, substance abuse) 5 and sociodemographic risk factors in the city of São Paulo (men aged 25-44, singles/divorced, Asians, immigrants, 3 and people who live downtown 6 ), to monitor patients and intervene with greater accuracy.…”

Section: Discussionmentioning

confidence: 99%

“…12,[21][22][23] Research conducted in Asia, Europe, and the Americas has explored a short-term association between meteorological factors and suicide. [10][11][12]18,[24][25][26][27] A time-series regression approach applying a generalized additive model (GAM) has typically been used in studies exploring the association between environmental factors and mortality 28,29 ; however, there are few studies about suicide. A study performed in Korea using the GAM, adjusted for confounding factors, observed a 1.4% increase in suicide with each 1 o C increase in daily mean temperature.…”

Section: Introductionmentioning

confidence: 99%

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Suicide and meteorological factors in São Paulo, Brazil, 1996-2011: a time series analysis

Bando

Teng

Volpe

et al. 2017

Rev. Bras. Psiquiatr.

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Objective: Considering the scarcity of reports from intertropical latitudes and the Southern Hemisphere, we aimed to examine the association between meteorological factors and suicide in Sã o Paulo. Method: Weekly suicide records stratified by sex were gathered. Weekly averages for minimum, mean, and maximum temperature ( o C), insolation (hours), irradiation (MJ/m 2 ), relative humidity (%), atmospheric pressure (mmHg), and rainfall (mm) were computed. The time structures of explanatory variables were modeled by polynomial distributed lag applied to the generalized additive model. The model controlled for long-term trends and selected meteorological factors. Results: The total number of suicides was 6,600 (5,073 for men), an average of 6.7 suicides per week (8.7 for men and 2.0 for women). For overall suicides and among men, effects were predominantly acute and statistically significant only at lag 0. Weekly average minimum temperature had the greatest effect on suicide; there was a 2.28% increase (95%CI 0.90-3.69) in total suicides and a 2.37% increase (95%CI 0.82-3.96) among male suicides with each 1 o C increase. Conclusion: This study suggests that an increase in weekly average minimum temperature has a short-term effect on suicide in Sã o Paulo.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Suicide and meteorological factors in São Paulo, Brazil, 1996-2011: a time series analysis

Bando

Teng

Volpe

et al. 2017

Rev. Bras. Psiquiatr.

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“…Worldwide, a peak in suicide in the spring is consistently observed in epidemiologic research studies (2)(3)(4)(5)(6)(7)(8). In the fall, a second, smaller peak in suicides has also been observed, although it has been less well replicated (7,(9)(10)(11)(12). Such seasonal peaks in suicide correspond temporally with the peaks in aeroallergens that are measured in the environment.…”

Section: Introductionmentioning

confidence: 89%

Changes in Severity of Allergy and Anxiety Symptoms Are Positively Correlated in Patients with Recurrent Mood Disorders Who Are Exposed to Seasonal Peaks of Aeroallergens

Postolache

Zimmerman

Lapidus

et al. 2009

Journal of Allergy and Clinical Immunology

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“…After World War II, the situation was improved and between the years 1946 and 1950, the rate of death certificates was 94.5 % and during the early 1950s virtually all (99.4 %) deaths were certified by doctors [19,20]. Since 1987, death certificate forms in Finland have complied with the recommendations of the World Health Organization's International Classification of Diseases [21]. The proportion of medicolegal investigations for suicide cases has been stable for many decades [12], and the overall autopsy rate has remained relatively high, both of which allow for reliable conclusions on suicide trends over time.…”

Section: Methodsmentioning

confidence: 99%

Temperature-associated suicide mortality: contrasting roles of climatic warming and the suicide prevention program in Finland

Helama

Holopainen

Partonen

2013

Environ Health Prev Med

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Objectives Suicide is a notable cause of death worldwide, and while suicidal behavior appears to be associated with variations in temperature, no estimations are available of climate change impacts on suicide rates. The study aims to evaluate the influence of temperature on suicide mortality, especially on multi-decadal and longer time scales, that is, at scales on which the ongoing warming distinctly operates and is correspondingly appropriate for the current policy responses to warming climate. Methods Our results are based on an extraordinarily long record of deaths from suicide in Finland from 1751 to 2008, and a similarly long climatic record of ambient temperatures correlative of environmental change in the study region.Results We show that temperature variability explains more than 60 % of the total suicide variance up until the initiation of a national suicide prevention program. Despite ongoing warming, suicide rates have declined since the initiation of the program. Conclusion By understanding the complexity of suicidal behavior as a response to ambient warming and the observed effects of interventions, our results underline the pressing need for a network of prevention programs to battle against temperature-mediated health hazards.

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Cyclic time patterns of death from suicide in northern Finland

Cited by 53 publications

References 29 publications

Suicide and meteorological factors in São Paulo, Brazil, 1996-2011: a time series analysis

Suicide and meteorological factors in São Paulo, Brazil, 1996-2011: a time series analysis

Changes in Severity of Allergy and Anxiety Symptoms Are Positively Correlated in Patients with Recurrent Mood Disorders Who Are Exposed to Seasonal Peaks of Aeroallergens

Temperature-associated suicide mortality: contrasting roles of climatic warming and the suicide prevention program in Finland

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