[ABSTRACT] The objective of the work was identify risk factors that could be related with the StressPostraumatic Disorder. it was carried out a secondary analysis to the information of the II National Study of Mental Health and Consumption of Substances Psicoactivas Colombia 1997. For the size of the sample was considered the relative importance of any mental disorder. A value of p of the10.2% was calculated, a maximum error of 2.25% and a level of trust of the 95% for a total of 15,721 inte