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Figure 2. Normalized values of variables at baseline, 9 wk after initiation of sleep hygiene counseling and prazosin treatment, and 6 mo after completion of 9 wk initiation period (final). ESS = Epworth Sleepiness Scale, Freq. = frequency, HA = headache, MOCA = Montreal Cognitive Assessment, OLF = olfaction, PCL-M = Posttraumatic Stress Disorder Checklist-Military Version. Ruff RL, Riechers RG 2nd, Wang X-F, Piero T, Ruff SS. For veterans with mild traumatic brain injury, improved posttraumatic stress disorder severity and sleep correlated with symptomatic improvement. J Rehabil Res Dev. 2012;49(9):1305–20.http://dx.doi.org/10.1682/JRRD.2011.12.0251