Wednesday, September 26, 2018 7:35 AM–9:00 AM ePosters: P175. ODI can predict promis physical function, pain intensity and pain interference domain scores in thoracolumbar patients.

BACKGROUND CONTEXT Increased usage of computer adaptive testing such as Patient Reported Outcome Measurement Information System (PROMIS) aims to improve the capture of high quality patient outcomes. Recent work has shown correlations between PROMIS and the Oswestry Disability Index (ODI), but not specifically in a thoracolumbar population using the PROMIS Physical Function, Pain Intensity and Pain Interference computer adaptive domains. PURPOSE The aim of this study was to study the relationship between PROMIS and ODI scores in thoracolumbar patients. STUDY DESIGN/SETTING Retrospective review of single institution clinical data and patient-reported outcome measures. PATIENT SAMPLE A total of 208 spine patients with a thoracolumbar (TL) diagnosis. OUTCOME MEASURES Legacy metrics: Oswestry Disability Index (ODI), PROMIS. METHODS Inclusion was patients greater than 18years with a diagnosis related to the thoracolumbar spine (stenosis, disc herniation, low back pain, disc degeneration, spondylolysis most commonly). Bivariate correlations assessed the linear relationships between ODI and PROMIS scores (Physical Function, Pain Intensity and Pain Interference). Linear regression predicted the relationship of ODI to PROMIS outcomes. Statistical significance was set at P<.05. RESULTS A total of 208 patients with a thoracolumbar diagnosis were included (age 58.39±73.32years, 49% female). ODI strongly correlated with PROMIS Physical Function (r=−0.737, P<.001), PROMIS Pain Interference (r=0.790, P<.001), and PROMIS Pain Intensity (r=0.668, P<.001). Visual analog scale back is correlated with each of the three components of PROMIS assessed, most strongly with Pain Intensity (r=0.673, P<.001), though still did correlate with Physical Function (r=−0.472, P<.001) and Pain Interference (r=0.568, P<.001). ODI scores of TL patients strongly predicted PROMIS scores for Physical Function (R2=0.54, P<.001), Pain Intensity (R2=0.45, P<.001) and most strongly Pain Interference (R2=0.62, P<.001), and thus PROMIS domains predict ODI. CONCLUSIONS The well-established patient reported outcome ODI correlated strongly with PROMIS domains. ODI score strongly predicts PROMIS scores for all three components (Physical Function, Pain Intensity, Pain Interference) for thoracolumbar spine patients. [ABSTRACT FROM AUTHOR]