ACR Meeting Abstracts

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Abstracts tagged "Statistical methods"

  • Abstract Number: 2224 • ACR Convergence 2022

    Genes Causative of Primary Immunodeficiency Are Risk Factors for and Over-expressed in Systemic Lupus Erythematosus

    Haley Davis1, Adam Labonte1, Katherine Owen2, Erika Hubbard1, Jessica Kain1, Brian Kegerreis1, Prathyusha Bachali3, Amrie Grammer4 and Peter Lipsky1, 1AMPEL BioSolutions, Charlottesville, VA, 2RILITE, Crozet, VA, 3AMPEL BioSolutions, Redmond, WA, 4AMPEL LLC, Charlottesville, VA

    Background/Purpose: Systemic lupus erythematosus (SLE) is a polygenic autoimmune disease whose specific causes are incompletely understood and for which there exists no single comprehensive diagnostic…
  • Abstract Number: 0450 • ACR Convergence 2022

    Incidence of Solid and Hematologic Tumors in Patients with ANCA: A 10-year Retrospective Cohort Study

    Enrico Brunetta1, Giacomo Ramponi2, marco folci2, Maria De Santis3, Giacomo Maria Guidelli1, Angela Ceribelli4, Nicoletta Luciano1, Marta Caprioli5, Arianna Sonaglia1 and Carlo Selmi6, 1IRCCS Humanitas Research Hospital, Rheumatology and Clinical Immunology, Rozzano, Italy, 2IRCCS Humanitas Research Hospital, Internal Medicine, Rozzano, Italy, 3Humanitas University, IRCCS Humanitas Research Hospital, Rheumatology and Clinical Immunology, Pieve Emanuele, Italy, 4Humanitas Research Hospital, Humanitas University, Rozzano (MI) Italy, Borgo San Giacomo, Italy, 5IRCCS Humanitas Research Hospital, Rheumatology and Clinical Immunology, Pavia, Italy, 6IRCCS Humanitas Research Hospital, Humanitas University, Rozzano (MI), Italy, Rozzano, Italy

    Background/Purpose: Serum antineutrophil cytoplasmic antibodies (ANCA) are significantly associated with the development of ANCA-associated vasculitides (AAV) but may also be detected in patients with other…
  • Abstract Number: 0552 • ACR Convergence 2022

    Identifying Subgroups of Patients Undergoing Knee Replacement

    Brooke McGinley1, Gabriela Rabasa2, Tuhina Neogi3, David Felson2 and Michael LaValley4, 1Boston University School of Public Health, Boston, MA, 2Boston University, Boston, MA, 3Boston University School of Medicine, Boston, MA, 4Boston University School of Public Health, Arlington, MA

    Background/Purpose: Knee replacement surgery (KR) is prevalent in the US with estimated lifetime risk from age 25 of 7% for males and 9.5% for females,…
  • Abstract Number: 0259 • ACR Convergence 2021

    JIA Diagnoses and Trends from 2006-2019: Has the U.S. ICD-9-to-ICD-10 Transition Created Coding Artifacts?

    Daniel Horton1, Lauren Parlett2, Cecilia Huang3, Stephen Crystal4, Amy Davidow5, Tobias Gerhard6, Carlos Rose7, Kevin Haynes2 and Brian Strom8, 1Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ, 2HealthCore, Wilmington, DE, 3Rutgers Institute for Health, New Brunswick, NJ, 4Rutgers School of Social Work, New Brunswick, NJ, 5Rutgers School of Public Health, New Brunswick, NJ, 6Ernst Mario School of Pharmacy, New Brunswick, NJ, 7Thomas Jefferson University, Wilmington, DE, 8Rutgers Biomedical and Health Sciences, Newark, NJ

    Background/Purpose: JIA is the most common rheumatic disease of childhood, but recent data on diagnostic trends in the US are lacking. Furthermore, the impact of…
  • Abstract Number: 0543 • ACR Convergence 2021

    Novel Insights into Systemic Sclerosis Using a Sensitive Computational Method to Analyze Whole-genome Bisulfite Sequencing Data

    Jeffrey Yu1, Tianyuan Lu1, Kaiqiong Zhao1, Kathleen Oros Klein1, Maximilien Lora2, Ines Colmegna3, Celia MT Greenwood4 and Marie Hudson2, 1Lady Davis Institute for Medical Research, Jewish General Hospital, Montréal, QC, Canada, 2McGill University, Montréal, QC, Canada, 3The Research Institute of the McGill University Health Centre, Montréal, QC, Canada, 4Epidemiology, Biostatistics and Occupational Health / Faculty of Medicine and Health Sciences / McGill University, Montréal, QC, Canada

    Background/Purpose: While the etiology of systemic sclerosis (SSc) remains largely unknown, epigenetic dysregulation including abnormal DNA methylation is thought to contribute to its onset and…
  • Abstract Number: 0759 • ACR Convergence 2021

    The Patient as Assessor of Disease Status: A Graphical Evaluation of Relations Between Patient-Reported Outcomes in Early Rheumatoid Arthritis

    Diederik De Cock1, Gert Verhavert1, Sofia Pazmino1, Delphine Bertrand1, Michal Doumen1, Rene Westhovens2 and Patrick Verschueren3, 1KU Leuven, Leuven, Belgium, 2University Hospitals KU Leuven, Maaseik, Belgium, 3University Hospitals Leuven - KULeuven, Leuven, Belgium

    Background/Purpose: Current EULAR-guidelines recommend treating Rheumatoid Arthritis (RA) early, intensively and to-target. Patient-Reported Outcomes (PROs) can be important contributors for remote monitoring of disease status…
  • Abstract Number: 0850 • ACR Convergence 2021

    Regression Methods for Modeling Western Ontario and McMaster Universities Arthritis Index (WOMAC) Pain Scores for Early Stage Knee Osteoarthritis

    Benjamin Sweigart and Michael LaValley, Boston University School of Public Health, Boston, MA

    Background/Purpose: The Western Ontario and McMaster Universities Arthritis Index (WOMAC) pain score [range 0-20] is a common outcome measure for clinical trials and observational studies…
  • Abstract Number: 0851 • ACR Convergence 2021

    Application of a Modified Recursive Feature Elimination Machine Learning Algorithm to Select Predictors of Mortality in Those with and Without Osteoarthritis

    Siyeon Kim1, Siqi Xiang1, Liubov Arbeeva1, Carolina Alvarez1, Amanda Nelson1, Yvonne Golightly1, Leigh Callahan2, Michael Kosorok1 and Becki Cleveland3, 1University of North Carolina at Chapel Hill, Chapel Hill, NC, 2University of North Carolina Thurston Arthritis Research Center, Chapel Hill, NC, 3Thurston Arthritis Research Center, University of North Carolina at Chapel Hill School of Medicine, Chapel Hill, NC

    Background/Purpose: Radiographic osteoarthritis (rOA) and joint symptoms at the knee and hip are predictors of mortality. However, questions remain about the nature of the relationship…
  • Abstract Number: 1218 • ACR Convergence 2021

    Unsupervised Clustering Identifies Unique Subsets of Patients in a Racially and Ethnically Diverse Rheumatoid Arthritis Cohort

    Gabriella Lui1, Namrata Singh2, James Andrews3, Jonathan Graf4 and Katherine Wysham5, 1University of Washington Department of Bioengineering, Seattle, WA, 2University of Washington, Bellevue, WA, 3University of Washington, Seattle, WA, 4Ucsf, San Francisco, CA, 5VA Puget Sound/University of Washington, Seattle, WA

    Background/Purpose: Single biomarkers have limited utility to date in guiding clinical care in RA. There is growing interest in applying machine learning algorithms to combine…
  • Abstract Number: 1290 • ACR Convergence 2021

    Validation of a Novel Lupus Multivariable Outcome Score as an Outcome Measure for Systemtic Lupus Erythematosus Trials

    Michal Abrahamowicz1 and Peter Lipsky2, 1McGill University, Montréal, QC, Canada, 2AMPEL BioSolutions, Charlottesville, VA

    Background/Purpose: Development of effective new Systemic Lupus Erythematosus (SLE) treatments requires a validated responder index responsive to clinically meaningful change and relevant to clinical practice.…
  • Abstract Number: 1419 • ACR Convergence 2020

    Clinical Disease Might Be Divided into Two Phenotypes in ANCA Associated Vasculitis; Results of a Cluster Analysis

    Elif Ediboglu1, Onay Gercik2, Emre Bilgin3, Dilek Solmaz4, Irfan Ocal5, Arzu Saglam6, Zeki Soypacacı2, Haluk Cinaklı5, Sedat Kiraz3, Ömer Karadağ7 and Servet Akar2, 1Izmir Katip Celebi University, Izmir, Izmir, Turkey, 2Izmir Katip Celebi University, Izmir, Turkey, 3Hacettepe University, Ankara, Turkey, 4Izmir Katip Celebi University, Department of Internal Medicine, Division of Rheumatology, Izmir, TURKEY, Izmir, Turkey, 5Izmir Katip Celebi University, Izmir, 6Hacettepe University, Ankara, 7Hacettepe University, Faculty of Medicine, Department of Internal Medicine, Division of Rheumatology, Ankara,, Ankara, Turkey

    Background/Purpose: One of the controversial matters in ANCA associated vasculitis is the definition of disease based on clinical characteristics since there is a remarkable overlap…
  • Abstract Number: 1470 • ACR Convergence 2020

    Machine Learning-Based Prediction of Knee Replacement in Persons with and Without Radiographic Osteoarthritis Using Clinical and Imaging Features of Osteoarthritis: The Multicenter Osteoarthritis Study

    S. Reza Jafarzadeh1, David Felson1, Michael Nevitt2, James Torner3, Cora Lewis4, Frank Roemer5, Ali Guermazi1 and Tuhina Neogi1, 1Boston University School of Medicine, Boston, MA, 2University of California, San Francisco, San Francisco, CA, 3University of Iowa, Iowa City, IA, 4University of Alabama Birmingham, Birmingham, AL, 5Boston University School of Medicine, Boston, MA, and Friedrich-Alexander University Erlangen-Nuremberg, Erlangen, Germany, Erlangen, Germany

    Background/Purpose: Prior studies of predictors of knee replacement (KR) have often included only a limited set of risk factors, been conducted primarily in knees with…
  • Abstract Number: 1487 • ACR Convergence 2020

    Biclustering Reveals Potential Knee Osteoarthritis Phenotypes in Exploratory Analyses: Data from the Osteoarthritis Initiative

    Amanda Nelson1, Thomas Keefe2, Todd Schwartz3, Richard Loeser1, Yvonne Golightly4, Liubov Arbeeva1 and J Marron2, 1University of North Carolina at Chapel Hill Thurston Arthritis Research Center, Chapel Hill, NC, 2University of North Carolina at Chapel Hill, Chapel Hill, NC, 3University of North Carolina at Chapel Hill Dept of Biostatistics, Chapel Hill, NC, 4University of North Carolina at Chapel Hill Dept of Epidemiology, Chapel Hill, NC

    Background/Purpose: To utilize novel methodologies to explore subgroups within the OAI clinical data.Methods: From the OAI baseline dataset (n=4796 individuals with or at risk of…
  • Abstract Number: 1734 • ACR Convergence 2020

    The Challenge of Assessing Wellbeing from the Patients` Perspective in Early Rheumatoid Arthritis

    Diederik De Cock1, Tianna Poffe2, Geert Verbeke2, Sofia Pazmino1, Veerle Stouten1, Delphine Bertrand1, Rene Westhovens3 and Patrick Verschueren4, 1KU Leuven, Leuven, Belgium, 2KU Leuven, Leuven, 3University Hospitals Leuven, Belgium, Leuven, Belgium, 4University Hospital Leuven, Leuven, Belgium

    Background/Purpose: Although more effective therapeutics and treatment strategies for Rheumatoid Arthritis (RA) have improved many patient-reported outcomes (PROs), still a sizeable number of patients in…
  • Abstract Number: 1745 • ACR Convergence 2020

    A Novel Method for Predicting 1-Year Retention of Abatacept Using Machine Learning Techniques

    Rieke Alten1, Claire Behar2, Christine Boileau2, Pierre Merckaert2, Ebenezer Afari2, Virginie Vannier-Moreau3, Sean Connolly3, Yedid Elbez2, Pierre-Antoine Juge4 and Karissa Lozenski3, 1Schlosspark-Klinik, Universitätsmedizin, Berlin, Germany, 2Excelya, Boulogne-Billancourt, France, 3Bristol-Myers Squibb Company, Princeton, NJ, 4Université de Paris, Service de Rhumatologie Hôpital Bichat-Claude Bernard, AP-HP, Paris, France

    Background/Purpose: In the ACTION (NCT02109666) study, using multivariable Cox proportional hazards regression models, patient (pt) global assessment of pain, country, reason for stopping last biologic,…
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All abstracts accepted to ACR Convergence are under media embargo once the ACR has notified presenters of their abstract’s acceptance. They may be presented at other meetings or published as manuscripts after this time but should not be discussed in non-scholarly venues or outlets. The following embargo policies are strictly enforced by the ACR.

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