Predictors of postoperative pain using PROMIS pain interference two-years following knee surgery.

INTRODUCTION: The purpose of this study was to identify preoperative factors associated with worse PROMIS Pain Interference (PI) two years following knee surgery. METHODS: Participants completed surveys preoperatively and two years postoperatively. Data collected included demographics, medical history, and multiple patient-reported outcomes measures, including PROMIS PI. RESULTS: After controlling for confounders, lower income, smoking, worse PROMIS Anxiety, worse Numeric Pain Score body pain, and worse Marx Activity Rating Scale were independent predictors for worse PROMIS PI two years after surgery. CONCLUSION: Worse PROMIS PI two years after elective knee surgery is associated with multiple socio-demographic patient identifiers.