Post Traumatic Stress Disorder and Social Context
For this purpose, we use several data sources. The Post-Terremoto survey was gathered as a followup of the nationally representative household survey that was collected a few months before the 2010 Chilean earthquake and tsunami streaked. Therefore, we have several pre-disaster contextual information such as poverty, income, ocupational status, health, family size and organization, among others. In the follow up persons were requested to respond the Davidson’s trauma battery to evaluate PTS symptoms, leading to 25600 valid PTS scores. Information about degree of household and other community goods destruction was also gathered, together with information about coping strategies (whether the affected individuals relied on recently organized neighborhood networks or acted individually/relying on close family networks). We complemented this data with information from other sources, such as the strength of the earthquake and the tsunami, the history of replicas, and the death rate (at the municipal level). We also added other social context variables such as local criminality and domestic violence.
Several models were estimated with PTS sympthomatology as the dependent variable. Individual level and hierarchical regression models were complemented with further studies of the mean and centile distribution symptoms at the municipal level, through linear and quantile regression methods.