title: Geographic variation of clinically diagnosed mood and anxiety disorders in Christchurch after the 2010/11 earthquakes.
abstract: The 22nd February 2011 Christchurch earthquake killed 185 people, injured over 8000, damaged over 100,000 buildings and on-going aftershocks maintained high anxiety levels. This paper examines the dose of exposure effect of earthquake damage assessments, earthquake intensity measures, liquefaction and lateral spreading on mood and anxiety disorders in Christchurch after this event. We hypothesise that such disorders are more likely to develop in people who have experienced greater exposure to these impacts within their neighborhood than others who have been less exposed, but also live in the city. For this purpose, almost all clinically diagnosed incident and relapsed cases in Christchurch in a 12 months period after the 2011 earthquake were analysed. Spatio-temporal cluster analysis shows that people living in the widely affected central and eastern parts after the 2010/11 earthquakes have a 23% higher risk of developing a mood or anxiety disorder than people living in other parts of the city. Generally, mood and anxiety-related disorders increase with closer proximity to damage from liquefaction and moderate to major lateral spreading, as well as areas that are more likely to suffer from damage in future earthquakes.
authors.affiliation: GeoHealth Laboratory, Department of Geography, University of Canterbury, Private Bag 4800, Christchurch 8140, New Zealand. Electronic address: daniel.hogg@pg.canterbury.ac.nz.
authors.forename: Daniel
authors.initials: D
authors.lastname: Hogg
authors.affiliation: GeoHealth Laboratory, Department of Geography, University of Canterbury, Private Bag 4800, Christchurch 8140, New Zealand. Electronic address: simon.kingham@canterbury.ac.nz.
authors.forename: Simon
authors.initials: S
authors.lastname: Kingham
authors.affiliation: Department of Geological Sciences, University of Canterbury, Private Bag 4800, Christchurch 8140, New Zealand. Electronic address: thomas.wilson@canterbury.ac.nz.
authors.forename: Thomas M
authors.initials: TM
authors.lastname: Wilson
authors.affiliation: GeoHealth Laboratory, Department of Geography, University of Canterbury, Private Bag 4800, Christchurch 8140, New Zealand. Electronic address: edward_griffin@moh.govt.nz.
authors.forename: Edward
authors.initials: E
authors.lastname: Griffin
authors.affiliation: University of Otago, PO Box 4345, Christchurch, New Zealand; The Canterbury District Health Board (CDHB), Christchurch, New Zealand. Electronic address: michael.ardagh@cdhb.govt.nz.
authors.forename: Michael
authors.initials: M
authors.lastname: Ardagh
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001008:Anxiety Disorders / Q000175:diagnosis* / Q000453:epidemiology*; D002648:Child; D002675:Child, Preschool; D016000:Cluster Analysis; D016208:Databases, Factual; D055866:Earthquakes; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged; D019964:Mood Disorders / Q000175:diagnosis* / Q000453:epidemiology*; D009520:New Zealand / Q000453:epidemiology; D012044:Regression Analysis; D017062:Small-Area Analysis; D055815:Young Adult
keywords: Anxiety; Dose of exposure effect; Earthquake intensity measures; Mood; Spatio-temporal cluster analysis