Using the Latent Growth Mixture Modeling approach (allows for observing differences in trajectories in sub-populations of a larger sample population) has had interesting results in two studies:

 - A study on Swedish tourists who were survivors of the 2004 Indian Ocean tsunami found 71% had low PTSD symptoms and fell within the resilient trajectory
 - A study on people exposed to the 2008 US Economic recession and Hurricane Sandy showed 83.6% had low depressive and PTSD symptoms and also fell on the resilient trajectory.


Latent Growth Mixture Modeling to Study Psychological Adjustment to Climate Change Disasters 

This form of modeling is a method of identifying unobserved sub-populations and both describing and examining longitudinal changes over time in those unobserved sub-populations.

Washington State University at Tri-Cities

Using trajectory models, research has shown that a minority of people exposed to acute-onset climate change-related natural disasters have diagnosable levels of anxiety, depression, PTSD, or grief with an estimated high-end ceiling of 30% (usually lower).

Using Trajectory Models to Predict Psychological Health Outcomes 

Shuquan Chen, Rohini Bagrodia, Charlotte C. Pfeffer, Laura Meli, George A. Bonanno,
Anxiety and resilience in the face of natural disasters associated with climate change: A review and methodological critique, Journal of Anxiety Disorders, Volume 76, 2020, 102297, ISSN 0887-6185, https://doi.org/10.1016/j.janxdis.2020.102297.
(https://www.sciencedirect.com/science/article/pii/S0887618520301110)

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