Using PROMIS Scores to Provide Cost-Conscious Follow-up After Foot and Ankle Surgery

Abstract

Background: National campaigns in the United States, such as Choosing Wisely, emphasize that decreasing low-value office visits maximizes health care value. Although patient-reported outcomes (PROs) are frequently used to quantify postoperative outcomes, they have not been assessed as a tool to help guide clinicians consider alternatives or discontinue in-person follow-up visits. The purpose of this study is to assess the frequency and cost of in-person follow-up visits after patients report substantial improvement defined as 2 consecutive improvements above preoperative Patient Reported Outcomes Measurement Information System (PROMIS) pain interference (PI) scores. Methods: Retrospective PROMIS PI data were obtained between 2015 and 2020 for common elective foot (n = 759) and ankle (n = 578) surgical procedures. Patients were divided into quartiles according to their preoperative PI score. Multivariable Cox proportional hazards models were used to investigate time to substantial improvement. Substantial improvement was defined as having 2 consecutive postoperative minimal clinically important differences (MCIDs) above preoperative PROMIS PI scores. MCID was measured using the distribution-based method. Multivariable negative binomial models were used to determine the number of visits and direct associated costs after substantial improvement. The cost to payors was estimated using reimbursement rates. Results: Within 3 months, 12% to 46% of foot and 16% to 61% of ankle patients achieved substantial improvement. Results vary by preoperative pain quartile, with patients who report higher preoperative pain scores achieving earlier improvement. After achieving substantial improvement, foot and ankle patients averaged 3.60 and 4.01 follow-up visits during the remaining 9 months of the year. Visit costs averaged $266 and $322 per foot and ankle patient respectively. Conclusion: Postoperative follow-up visits are time-consuming and costly. Physicians might consider objective measures, such as PROMIS PI, to determine the need, timing, and alternatives for in-person follow-up visits for elective foot and ankle surgeries after patients demonstrate reliable clinical improvement. Level of Evidence: Level III, retrospective cohort study at a single institution.