One-hundred and thirty-two victims of motor vehicle accidents (MVAs),
who sought medical attention as a result of the MVA, were assessed at
three points in rime: 1-4 months post-MVA, 6 months later, and 12 mont
hs later. Of the 48 who met the full criteria for Post-Traumatic Stres
s Disorder (PTSD) initially, half had remitted at least in part by the
6-month follow-up point and two-thirds had remitted by the l-yr follo
w-up. Using logistic regression, 3 variables combined to correctly ide
ntify 79% of remitters and non-remitters at the 12-month follow-up poi
nt: initial scores on the irritability and foreshortened future sympto
ms of PTSD and the initial degree of vulnerability the subject felt in
a motor vehicle after the MVA. Four variables combined to predict 64%
of the variance in the degree of post-traumatic stress symptoms at 12
months: presence of alcohol abuse and/or an Axis-it disorder at the t
ime of the initial assessment as well as the total scores on the hyper
arousal and on avoidance symptoms of PTSD present at the initial post-
MVA assessment. Copyright (C) 1996 Elsevier Science Ltd