Health services research using administrative claims data for investigating utilization of rehabilitation services and associated outcomes
- 2000 BS, Occupational Therapy, Government Medical College, Nagpur University, India
- 2005 MS, Occupational Therapy, University at Buffalo
- 2009 PhD, Health and Rehabilitation Sciences, University of Pittsburgh
- 2010 Postdoc, Rehabilitation Sciences, University of Texas Medical Branch
- 2013 MPH, Epidemiology, University of Texas Medical Branch
Current Research Funding
Grant #K01HD086290 4/15/16 - 3/31/21 National Center for Medical Rehabilitation Research at NICHD, NIH. Comparing Access and Effectiveness of Post-Acute Care Settings among Medicare Beneficiaries. Goal: Explore the variation in access to post-acute care settings in patients discharged from acute hospitals after stroke, lower extremity fracture, and lower extremity joint replacement. Role: PI
Collins DM, Downer B, Kumar A, Krishnan S, Li CY, Markides KS, Karmarkar AM. Impact of Multiple Chronic Conditions on Activity Limitations among Older Mexican-American Care Recipients. Prev Chronic Dis. 2018 May 3;15:E51.
Li CY, Al Snih S, Karmarkar A, Markides KS, Ottenbacher KJ. Early frailty transition predicts 15-year mortality among nondisabled older Mexican Americans. Ann Epidemiol. 2018 Apr 12. pii: S1047-2797(17)30943-2. [Epub ahead of print]
Middleton A, Kuo YF, Graham JE, Karmarkar A, Lin YL, Goodwin JS, Haas A, Ottenbacher KJ. Readmission Patterns Over 90-Day Episodes of Care Among Medicare Fee-for-Service Beneficiaries Discharged to Post-acute Care. J Am Med Dir Assoc. 2018 Apr 21. pii: S1525-8610(18)30130-0.[Epub ahead of print]
Hong I, Karmarkar A, Chan W, Kuo YF, Mallinson T, Ottenbacher KJ, Goodwin J, Andersen CR, Reistetter TA. Discharge Patterns for Ischemic and Hemorrhagic Stroke Patients Going from Acute Care Hospitals to Inpatient and Skilled Nursing Rehabilitation. Am J Phys Med Rehabil. 2018 Mar 28. [Epub ahead of print]
Li CY, Karmarkar A, Adhikari D, Ottenbacher K, Kuo YF. Effects of Age and Sex on Hospital Readmission in Traumatic Brain Injury. Arch Phys Med Rehabil. 2018 Jan 4. pii: S0003-9993(17)31466-1. [Epub ahead of print]
Li CY, Karmarkar A, Lin YL, Kuo YF, Ottenbacher KJ, Graham JE. Is Profit Status of Inpatient Rehabilitation Facilities Independently Associated With 30-Day Unplanned Hospital Readmission for Medicare Beneficiaries? Arch Phys Med Rehabil. 2018 Mar;99(3):598-602.e2. PMCID: PMC5826753.
Kumar A, Karmarkar A, Downer B, Vashist A, Adhikari D, Al Snih S, Ottenbacher K. Current Risk Adjustment and Comorbidity Index Underperformance in Predicting Post-Acute Utilization and Hospital Readmissions After Joint Replacements: Implications for Comprehensive Care for Joint Replacement Model. Arthritis Care Res (Hoboken). 2017 Nov;69(11):1668-1675. PMCID: PMC5524616.
Graham JE, Prvu Bettger J, Fisher SR, Karmarkar AM, Kumar A, Ottenbacher KJ. Duration to Admission and Hospital Transfers Affect Facility Rankings from the Postacute 30-Day Rehospitalization Quality Measure. Health Serv Res. 2017 Jun;52(3):1024-1039. PMCID: PMC5441495.
Pretz CR, Graham JE, Middleton A, Karmarkar AM, Ottenbacher KJ. Longitudinal Investigation of Rehospitalization Patterns in Spinal Cord Injury and Traumatic Brain Injury among Medicare Beneficiaries. Arch Phys Med Rehabil. 2017 May;98(5):997-1003. PMCID: PMC5403607.
Welsh RL, Graham JE, Karmarkar AM, Leland NE, Baillargeon JG, Wild DL, Ottenbacher KJ. Effects of Postacute Settings on Readmission Rates and Reasons for Readmission Following Total Knee Arthroplasty. J Am Med Dir Assoc. 2017 Apr 1;18(4):367.e1-367.e10. PMCID: PMC5366260.
Kumar A, Karmarkar AM, Graham JE, Resnik L, Tan A, Deutsch A, Ottenbacher KJ. Comorbidity Indices versus Function as Potential Predictors of 30-Day Readmission in Older Patients Following Postacute Rehabilitation. J Gerontol A Biol Sci Med Sci. 2017 Feb;72(2):223-228. PMCID: PMC5233915.