Friday, September 28, 2018 10:45 AM–12:00 PM abstracts: how should we measure our success: 187. PROMIS correlates with patient satisfaction and VAS back pain scores

Abstract

BACKGROUND CONTEXT Computer adaptive testing facilitates quicker administration of patient-relevant questions. The Patient Reported Outcome Measurement Information System (PROMIS) instruments of Physical Function, Pain Intensity and Pain Interference have been shown to correlate with established patient outcome metrics, though this relationship has yet to be investigated in relation to patient satisfaction. PURPOSE The aim of this study was to study the relationship between PROMIS and VAS scores and patient satisfaction 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 ODI, Visual Analog Scale (VAS) for Back and Leg pain, Scoliosis Research Society 22 (SRS-22); Patient Reported Outcome Measurement Information System (PROMIS). METHODS Inclusion was patients greater than 18 years 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 of PROMIS scores (Physical Function, Pain Intensity, and Pain Interference) and ODI with VAS Leg and Back pain scores and patient satisfaction (SRS-22) questions specific to patient satisfaction of their back shape and back management. Linear regression predicted the relationship of PROMIS to VAS and satisfaction outcomes. Statistical significance was set at P RESULTS A total of 208 patients with a thoracolumbar diagnosis were included (age 58.39 ± 73.32 years, 49% female). VAS back pain scores (r=0.673, P CONCLUSIONS VAS Back Pain scores predicted PROMIS Pain Intensity scores as strongly as ODI, though ODI outperformed in predicting PROMIS Physical Function and Pain Interference. Conversely, PROMIS Pain Intensity predicted VAS Back Pain stronger than ODI, though ODI outperformed the other two PROMIS domains. Patients’ satisfaction of the shape of their back and their back management were significantly correlated with PROMIS scores in all three domains.