TY - JOUR
T1 - The Patient Acceptable Symptom State for the Harris Hip Score Following Total Hip Arthroplasty
T2 - Validated Thresholds at 3-Month, 1-, 3-, 5-, and 7-Year Follow-Up
AU - Galea, Vincent P
AU - Florissi, Isabella
AU - Rojanasopondist, Pakdee
AU - Connelly, James W
AU - Ingelsrud, Lina H
AU - Bragdon, Charles
AU - Malchau, Henrik
AU - Troelsen, Anders
N1 - Copyright © 2019 Elsevier Inc. All rights reserved.
PY - 2020/1/1
Y1 - 2020/1/1
N2 - Background: The Patient Acceptable Symptom State (PASS) represents the value on a patient-reported outcome measure scale beyond which patients consider themselves well or in a satisfactory state. The aim of this study is to define and validate the PASS threshold for the HHS at 3 months, 1, 3, 5, and 7 years after THA. Methods: A total of 976 patients from 14 centers in 7 countries were enrolled into a prospective study. Patients completed the HHS and a numerical rating scale for satisfaction at each follow-up. PASS thresholds for the HHS were calculated at each follow-up interval using the anchor-based, 80% specificity method. A bootstrapping method was used to internally validate the primary PASS thresholds. A patient sample sourced from an institutional registry was used for external validation. Results: The HHS was an excellent predictor of satisfaction at each time point (area under the curve > 0.8; P < .001). PASS thresholds for the HHS were 76 points at 3 months, 89 points at 1 year, 93 points at 3 years, 94 points at 5 years, and 93 points at 7 years. When applied to the internal and external validation cohorts, all PASS thresholds showed acceptable or excellent ability to predict satisfaction (area under the curve = 0.73-80; P < .001). Conclusion: The present study is the first to present validated PASS thresholds for the HHS following THA. These findings will serve as a useful reference for future THA outcome studies and as benchmarks for surgeons in their assessment of their patients’ clinical success.
AB - Background: The Patient Acceptable Symptom State (PASS) represents the value on a patient-reported outcome measure scale beyond which patients consider themselves well or in a satisfactory state. The aim of this study is to define and validate the PASS threshold for the HHS at 3 months, 1, 3, 5, and 7 years after THA. Methods: A total of 976 patients from 14 centers in 7 countries were enrolled into a prospective study. Patients completed the HHS and a numerical rating scale for satisfaction at each follow-up. PASS thresholds for the HHS were calculated at each follow-up interval using the anchor-based, 80% specificity method. A bootstrapping method was used to internally validate the primary PASS thresholds. A patient sample sourced from an institutional registry was used for external validation. Results: The HHS was an excellent predictor of satisfaction at each time point (area under the curve > 0.8; P < .001). PASS thresholds for the HHS were 76 points at 3 months, 89 points at 1 year, 93 points at 3 years, 94 points at 5 years, and 93 points at 7 years. When applied to the internal and external validation cohorts, all PASS thresholds showed acceptable or excellent ability to predict satisfaction (area under the curve = 0.73-80; P < .001). Conclusion: The present study is the first to present validated PASS thresholds for the HHS following THA. These findings will serve as a useful reference for future THA outcome studies and as benchmarks for surgeons in their assessment of their patients’ clinical success.
KW - Harris Hip Score
KW - Patient Acceptable Symptom State
KW - patient-reported outcome measures
KW - satisfaction
KW - total hip arthroplasty
UR - http://www.scopus.com/inward/record.url?scp=85071947665&partnerID=8YFLogxK
U2 - 10.1016/j.arth.2019.08.037
DO - 10.1016/j.arth.2019.08.037
M3 - Journal article
C2 - 31519399
VL - 35
SP - 145-152.e2
JO - Journal of Arthroplasty
JF - Journal of Arthroplasty
SN - 0883-5403
IS - 1
ER -