Calculators
These calculators estimate the chance of specific outcomes after surgery.
- The Total Hip and Knee Arthroplasty Outcome Calculator
- The Total Hip and Knee Arthroplasty Outcome Calculator for patients within the Veterans Health Administration (“Outcome Calculator”)
- Benefit-Risk Calculator for Total Knee Replacement
- Risk Calculator for Surgical Repair of Hip Fracture
- American Society of Anesthesiology (ASA - PS) Calculator
Data Sets
These data sets are a structured collection of data organized for analysis or processing in Surgery.
Calculators
The Total Hip and Knee Arthroplasty Outcome Calculator
The Total Hip and Knee Arthroplasty Outcome Calculator estimates the chance of specific outcomes (such as a complication or death) after surgery. The estimates are based upon information about the patient’s prior health history. The estimates are calculated from models developed and validated using data from a large number of patients who had a primary elective total knee or hip arthroplasty. More information about the development and accuracy of the models have been published here:
Harris AHS, Kuo AC, Weng Y, Trickey AW, Bowe T, Giori, NG (2019). Can Machine Learning Methods Produce Accurate and Easy to Use Prediction Models of 30-day Complications and Mortality After Knee or Hip Arthroplasty. Clinical Orthopaedics & Related Research, 477(2), 452-460.
The Total Hip and Knee Arthroplasty Outcome Calculator for patients within the Veterans Health Administration (“Outcome Calculator”)
The Total Hip and Knee Arthroplasty Outcome Calculator estimates the chance of specific outcomes of a large number of patients of the Veterans Health Administration (such as a complication or death) after surgery. The estimates are based upon information about the patient’s prior health history. The estimates are calculated from models developed and validated using data from a large number of patients who had a primary elective total knee or hip arthroplasty. More information about the development and accuracy of the models have been published here:
Harris AHS, Kuo A, Nordin D, Bowe T, Gupta S, Giori NG (2018). Prediction Models for 30-Day Mortality and Complications Following Total Knee and Hip Arthroplasty for Veteran Health Administration Patients with Osteoarthritis. Journal of Arthroplasty, 33(5), 1539-1545.
Benefit-Risk Calculator for Total Knee Replacement
The Benefit-Risk calculator for Total Knee Replacement estimates the chance of mortality and complications (30-day) after surgery, and compares these risks against the chance of the patient experiencing clinically meaningful improvements across 3 domains: Pain, Symptoms, and Activities of Daily Living. More information about the development and accuracy of the models have been published here:
Harris, AHS, Kuo, AC, Bowe, T, Manfredi, L, Lalani, N, & Giori, NJ (2021). Can Machine Learning Methods Produce Accurate and Easy-to-use Preoperative Prediction Models of One Year Improvements in Pain and Functioning After Knee Arthroplasty? Journal of Arthroplasty, 36(1), 112-117
Risk Calculator for Surgical Repair of Hip Fracture
A tool that estimates the chance of specific outcomes (such as a complication or death) for the 30 days after surgery. The estimates are calculated from models developed and validated using data from a large number of patients who had surgical repair of hip fracture.More information about the development and accuracy of the models can be found here:
Harris AHS, Trickey AW, Eddington HS, Seib CD, Kamal RN, Kuo AC, Ding Q, Giori NJ (2022). A Tool to Estimate Risk of 30-day Mortality and Complications After Hip Fracture Surgery: Accurate Enough for Some but Not All Purposes? A Study From the ACS-NSQIP Database. Clin Orthop Relat Res. 2022 Dec 1;480(12):2335-2346. doi: 10.1097/CORR.0000000000002294. Epub 2022 Jun 27. PMID: 35901441; PMCID: PMC10538935.
American Society of Anesthesiology (ASA - PS) Calculator
A tool to estimate American Society of Anesthesiology - Physical status (ASA-PS) Classification. This tool estimates four separate probabilities of an individual being in ASA-PS Class I through IV based on preoperative patient characteristics. These outputs can potentially assist with research, quality measurement, resource allocation, and clinical applications. More information about the development and accuracy of this model is published here:
Mudumbai SC, Pershing S, Bowe T, Kamal RN, Sears E, Finlay AK, Hawn MT , Weng Y, Trickey AW, Mariano ER, Harris AHS (2019). Development and Validation of a Predictive Model for American Society of Anesthesiologists Physical Status.
Data Sets
Delta Plot Data and R-Code Data
These data and code can be used to produce the "delta plots", a visual representation of which health care entities have improved or deteriorated over time as described in the article below:
Harris, AHS, Hagedorn, H, Finlay, A (in review). Delta Studies: Expanding the Concept of Deviance Studies to Better Design Implementation and De-implementation Interventions.
Medicare Data - Center for Medicare and Medicaid Services (CMS)
The Medicare data are administrative claims data. Claims data are derived from billing data collected in the course of administering insurance programs. They can include attributes such as patient demographics, procedure and diagnosis codes, prescription fills, insurance benefit design information, and other patient-provider communications.
Medicaid Data - Center for Medicare and Medicaid Services (CMS)
The Medicaid data are claims data. Claims data are derived from billing data collected in the course of administering insurance programs. They can include things like patient demographics, procedure and diagnosis codes, prescription fills, insurance information, and other patient-provider communications.