Acknowledgements. â¡ Co-authors: Brandon Marshall, Benjamin Vicente,. Sandra Saldivia, Karestan Koenen, Kristopher. Arheart, Robert Kohn, Stephen Buka.
ASSESSING THE RELATIONSHIP BETWEEN PSYCHOSOCIAL STRESSORS AND PSYCHIATRIC RESILIENCE AMONG CHILEAN DISASTER SURVIVORS 2016 Epidemiology Congress of Americas Conference Cristina A. Fernandez, MSEd
Acknowledgements 2
Co-authors: Brandon Marshall, Benjamin Vicente, Sandra Saldivia, Karestan Koenen, Kristopher Arheart, Robert Kohn, Stephen Buka ¨ Funding: ¨
Died before disaster (n=165) n=2,667 Did not experience disaster (n=18) n=2,649 Lost to follow-up (n=941) n=1,708 Pre-disaster MDD/PTSD (n=548)
2011: Final analytic sample (n=1,160)
Independent Variables (2003) 12
¨
Pre-disaster Stressors: ¤ Direct
tolerance
n The
Composite International Diagnostic Interview (CIDI), Spanish v2.110 n Prior lifetime disaster experience (PTSD module) ¤ Cross
tolerance
of Threatening Experiences (LTE)11 n 12-item questionnaire used to measure major categories of stressful life events (from the prior 6 months) n List
Dependent Variables (2011) 13
¨
Post-Disaster PTSD:10 ¤ Modified
version of the PTSD module of the CIDI ¤ Tailored such that the only traumatic event that could be endorsed was if the participant was involved in the disaster ¨
Post-Disaster MDD:10 ¤
CIDI Depressive Disorders module
Sensitivity Analyses 14
¨
Those lost to follow-up (N=941; 33%) were significantly more likely to have been: ¤ Females n χ2
(69%) vs. males (31%)
= 14.8
¤ High
school/college education (73%) vs. illiterate/elementary school (27%) n χ2 =
11.9
¤ Not
middle age (55 years; 84%) vs. middle age (17%) n χ2 =
4.7
Statistical Analyses 15
To mitigate selection & confounding biases, stabilized inverse probability weights (by gender, age, and education) were calculated12,13 ¨ Marginal structural logistic models (with robust variance estimators) were utilized to predict postdisaster PTSD and MDD12 ¨
Demographics: PTSD 16
Table 1. Descriptive information of participants with post-disaster PTSD (n=106).* Variable % with post-disaster PTSD Gender: Female 82.1 Age: