Disclosure: None disclosed. Objective: To provide a profile of older adults in Ontario, Canada with a diagnosis of acquired brain injury (ABI) for the years 2003 to 2010 and their trajectory through a publicly insured health care system. Design: Retrospective cohort. Setting: Ontario, Canada. Participants: This study focuses on the ABI population in Ontario over the age of 65. Interventions: Not applicable. Main Outcome Measures: Emer- gency room visits, acute care admissions, discharge destination. Re- sults: Patients with ABI over the age of 65 years disproportionately utilized more care as indicated by emergency room visits (ED), acute care, and in-patient rehabilitation admissions. In 2006, 28% of the non-traumatic brain injury (nTBI) ED visits and 13% of the TBI ED visits were from patients over the age of 65; 42% of the nTBI hospitalizations and 37% of TBI hospitalizations were based on pa- tients over the age of 65; and 39% of ABI-related inpatient rehabili- tation patients were over the age of 65. A larger proportion of the older ABI population is discharged from acute care to inpatient rehabilita- tion (12.1%), and other services such as long term care/home care services (30.1%), than the ABI population as a whole (9.8% to inpa- tient rehab, 15.5% to other). This presentation will provide more in-depth data on this vulnerable population. Conclusions: Population based administrative data can be used successfully to provide esti- mates of burden of care for acquired brain injury. This presentation provides a compelling argument for special attention to a growing need in the health care system. The results from population based data can be used to guide health care policy and health care planning for the older adult ABI population. Key Words: Acquired brain injury; Older adults; Rehabilitation. Poster 34 Discrepant Verbal Versus Nonverbal Memory in OEF/OIF Combat Veterans and Possible Association with Tinnitus. James J. Muir (Veterans Affairs Northern California Health Care Sys- tem, Martinez, CA), Michael A. Cole, Utaka Springer, Diana Partovi. Disclosure: None disclosed. Objective: Memory complaints are common in OEF/OIF veterans and represent a primary target for rehabilitation given their impact on multidisciplinary rehabilitative efforts and everyday functioning. Our research sought to better understand the nature of memory distur- bances in OEF/OIF veterans. Anecdotally within clinical practice, verbal memory frequently appears differentially impacted as compared to nonverbal memory, which is consistent with some initial reports in the OEF/OIF literature. Our research sought to empirically investigate whether a discrepancy exists between verbal and nonverbal learning and memory and to explore potential mechanisms underlying differ- ential verbal versus nonverbal learning and memory. There is some suggestion in the literature that tinnitus can selectively target memory systems, with a greater left hemisphere lateralization. Design: Paired samples t-tests compared verbal and nonverbal performances. Poten- tial predictors of verbal/nonverbal discrepancies were tested with Pearson correlations (psychiatric measures, TBI history, estimated premorbid verbal abilities) and t-tests (presence/absence of tinnitus and hearing loss). Setting: VA medical center outpatient neuropsy- chology clinic. Participants: 111 OEF/OIF veterans referred for neu- ropsychological evaluation. Interventions: None. Main Outcome Measures: Select neuropsychological tests, psychiatric measures, de- mographic and medical data. Results: The sample performed signifi- cantly worse for verbal versus nonverbal learning and memory, with verbal performances 1 SD below the normative mean. This differ- ence was not associated with estimated premorbid verbal abilities, mTBI, PTSD or depression, and verbal versus nonverbal fluency performances did not differ significantly. Tinnitus, but not hearing loss, was related to the differential performance in verbal versus nonverbal learning. Conclusions: Because nonverbal learning and memory functions often remain intact, these can be harnessed to develop neurocognitive rehabilitation interventions to compensate for observed verbal learning and memory deficits. Tinnitus has been identified as a possible mechanism for selective verbal learning deficits and represents an important area for follow-up research. Key Words: Traumatic brain injury (or TBI); Memory; Tinnitus; Rehabilitation. Poster 35 Effects Of Alcohol Use In Veterans With Mild TBI and/or Behavioral Health Conditions. Amy Herrold (Hines VA Hospital, Hines, IL), Judi Babcock-Parziale, Walter High, Bridget Smith, Charlesnika Evans, Amanda Urban, Kurt Noblett, Theresa Pape. Disclosure: None disclosed. Distinguishing mild traumatic brain injury (mTBI) and other com- bat-related conditions such as post traumatic stress disorder (PTSD) is challenging because of overlapping symptoms. This diagnosis is fur- ther complicated by alcohol use. Objective: The primary objective was to describe self-reported alcohol use in Operation Enduring Freedom/Operation Iraqi Freedom (OEF/OIF) Veterans. The secondary objective was to, determine prev- alence of functional and cognitive impairments, sleep disturbances, anxiety, and depression, according to self-reported alcohol use. De- sign: Prospective study Setting: Hines VA Hospital, Hines, IL. Par- ticipants: A pilot sample (N=66) was abstracted from a larger study of OEF/OIF veterans. Individuals were classified as: confirmed mTBI (n=5), behavioral health (BH) (n=19), mTBI+BH (n=14) and healthy controls (HC; n=14). Main Outcome Measures: Structured neuropsychological interview, Clinically Administered PTSD Scale, Beck Depression Inventory-II (BDI-II), Beck Anxiety Inventory (BAI), Alcohol Use Disorders Identification Test (Audit-C), World Health Organization Disability Assessment Schedule (WHODAS-II) and Wisconsin Card Sorting Task-64 (WCST). Results: 42.4% of the sample tested AUDIT-C positive. BAI and BDI scores were higher in the BH (BAI=127, BDI=147) and mTBI+BH groups (BAI=149, BDI=188) compared to HC (BAI=22, BDI=54) and mTBI participants (BAI=33, BDI=64; ANOVA with post hoc Tukey, P0.05). Higher WHODAS total scores, for the BH (2819) and mTBI+BH groups (3323), indicated greater functional difficulty compared to controls (910, ANOVA with post-hoc Tukey, P0.05). BH individuals with alcohol use disorder tended to have more difficulty with an executive function cognitive task (WCST mean = 525) compared to BH Audit-C negative subjects (476, t-test, p=0.06). Conclusions: Overall, alcohol use disorder is preva- lent amongst veterans returning from the current conflicts. While this pilot analysis is not powered to detect significant between-group differences, results suggest that abstracting a larger sample to examine effect of alcohol use disorder on behavioral and congitive outcomes is warranted. Key Words: Alcohol; Traumatic brain injury; Depression; Anxiety; Rehabilitation. Poster 36 The Influence of Corrective Lenses on Foot Displacement during Gait: Implications on Falling and Disability. Dennis Tomashek (University of Wisconsin-Milwaukee, Milwaukee, WI), Kevin Keenan, Kurt Beschorner, Roger Smith. Disclosure: None disclosed. Objectives: Measure the amount of foot placement error caused by varying strength multifocal lens eyeglasses when stepping down from a raised surface during gait and identify potential implications on falls risk rates. Design: A within-subjects repeated measure design with random order of conditions. Setting: Gait Analysis & Biodynamics Laboratory. Participants: 20 young adult (18-25) non-multifocal lens wearers and 10 older adult (45) non-multifocal lens wearers. Partic- ipants with eye, balance, or gait pathology are excluded. Interven- tions: Multifocal reading eyeglasses with +1.75, +2.50, and +3.50 diopter add lenses in the lower portion of progressive lens glasses and non-corrective clear eyeglasses. Main Outcome Measures: Distance of foot placement from the target, measured by force plates using 1703 2011 ACRM-ASNR ANNUAL CONFERENCE ABSTRACTS Arch Phys Med Rehabil Vol 92, October 2011