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. Author manuscript; available in PMC: 2013 Aug 20.
Published in final edited form as: Biol Psychiatry. 2009 Oct 28;67(4):346–356. doi: 10.1016/j.biopsych.2009.08.023

Figure 4.

Figure 4

To illustrate the differences in total negative affectivity between groups, mean stacked symptom severity scores on the STAI (trait), BDI, and ASI for nonexposed and trauma-exposed control groups and single-trauma and multiple-trauma PTSD groups are illustrated in the bottom panel. In the top panel, mean duration of PTSD (i.e., disorder chronicity) in years for single-trauma and multiple-trauma PTSD groups are plotted, showing that broad negative affectivity and chronicity demonstrate concurrent increases. ASI, Anxiety Sensitivity Index; BDI, Beck Depression Inventory; PTSD, post-traumatic stress disorder; STAI, State Trait Anxiety Inventory.