title: Association between completed suicide and environmental temperature in a Mexican population, using the Knowledge Discovery in Database approach.
abstract: OBJECTIVE
  Suicide is a worldwide health problem and climatological characteristics have been associated with suicide behavior. However, approaches such as the Knowledge Discovery in Database are not frequently used to search for an association between climatological characteristics and suicide. The aim of the present study was to assess the association between weather data and suicide in a Mexican population.
  
  
  METHODS
  We used the information of 1357 patients who completed suicide from 2005 to 2012. Alternatively, weather data were provided by the National Water Commission. We used the Knowledge Discovery in Database approach with an Apriori algorithm and the data analyses were performed with the Waikato Environment for Knowledge Analysis software. One hundred rules of association were generated with a confidence of 0.86 and support of 1.
  
  
  RESULTS
  We found an association between environmental temperature and suicide: days with no rain and temperatures between 30 °C and 40 °C (86-104 °F) were related to males completing suicide by hanging.
  
  
  CONCLUSIONS
  In the prevention of suicidal behavior, the Knowledge Discovery in Database could be used to establish climatological characteristics and their association with suicide. This approach must be considered in future prevention strategies.
authors: División Académica Multidisciplinaria de Comalcalco, Universidad Juárez Autónoma de Tabasco, Comalcalco, Tabasco, Mexico.
authors: Verónica
authors: V
authors: Fernández-Arteaga
authors: División Académica Multidisciplinaria de Comalcalco, Universidad Juárez Autónoma de Tabasco, Comalcalco, Tabasco, Mexico. Electronic address: alfonso_tovillaz@yahoo.com.mx.
authors: Carlos Alfonso
authors: CA
authors: Tovilla-Zárate
authors: Subdirección de Investigaciones Clínicas, Instituto Nacional de Psiquiatría Ramón de la Fuente Muñiz, Ciudad de Mexico, Mexico.
authors: Ana
authors: A
authors: Fresán
authors: División Académica Multidisciplinaria de Jalpa de Méndez, Universidad Juárez Autónoma de Tabasco, Jalpa de Méndez, Tabasco, Mexico.
authors: Thelma Beatriz
authors: TB
authors: González-Castro
authors: División Académica de Ciencias de la Salud, Universidad Juárez Autónoma de Tabasco, Villahermosa, Tabasco, Mexico.
authors: Isela E
authors: IE
authors: Juárez-Rojop
authors: Secretaría de Salud, Hospital General de Yajalón, Yajalón, Chiapas, Mexico.
authors: Lilia
authors: L
authors: López-Narváez
authors: División Académica Multidisciplinaria de Jalpa de Méndez, Universidad Juárez Autónoma de Tabasco, Jalpa de Méndez, Tabasco, Mexico.
authors: Yazmín
authors: Y
authors: Hernández-Díaz
mesh_terms: D002980:Climate; D003628:Database Management Systems; D005260:Female; D006801:Humans; D008297:Male; D008800:Mexico; D013405:Suicide; D013696:Temperature
keywords: Data mining; Mexican population; Suicide; Weather