Arenson MB, et al. - Researchers aimed at assessing the predictors of better functioning within patients with posttraumatic stress disorder (PTSD) via examining 254 veterans with likely PTSD. They determined PTSD symptom severity using the Clinician-Administered PTSD Scale, and evaluated aspects of current functioning and quality of life using the SF-36 and single-item question. In fully adjusted models (controlling for age, gender, and PTSD score, and including all significant psychosocial predictors of the outcome of interest), greater physical functioning was observed in correlation to greater sleep quality, lower C-reactive protein, and lower erythrocyte sedimentation rate; greater social functioning was observed in correlation to lower depression and greater perceived social support; greater occupational functioning was observed in correlation to lower depression; and greater quality of life was observed in correlation to greater combat exposure, greater optimism and greater perceived social support.