PUBLICATIONS

Journals

Chhatwal J, Hajjar A, Mueller PP, Nemutlu G, Kulkarni N, Peters MLB, Kanwal F. Hepatocellular Carcinoma Incidence Threshold for Surveillance in Virologically Cured Hepatitis C Individuals. Clin Gastroenterol Hepatol. 2024 Jan;22(1):91-101.e6. doi: 10.1016/j.cgh.2023.05.024. Epub 2023 Jun 9. PMID: 37302445; PMCID: PMC10709527.
Chhatwal J, Samur S, Yang J, Roberts L, Nguyen M, Ozbay A, Ayer T, Parikh N, Singal A. (2023). TU1551 Cost-Effectiveness of Hepatocellular Carcinoma Surveillance Programs Using Multi-Target Blood Test. Gastroenterology. 2023 May;164(6):s1412.
Zhang C, Ayer T, White III CC. Truncated Balancing Policy for Perishable Inventory Management: Combating High Shortage Penalties. Manufacturing & Service Operations Management. 2023 Sep; 25(6):2352-2370.
Vlachy J, Ayer T, Ayvaci M, Raghunathan S. The Business of Healthcare: The Role of Physician Integration in Bundled Payments. Manufacturing & Service Operations Management 25(3):996-1012.
She Z, Wang Z, Chhatwal J, Ayer T. Small Area Estimation of Case Growths for Timely COVID-19 Outbreak Detection. 2023 Dec.
Kirshner C, Merdan S, Erdogan M, Lydston M, Ayer T, Chhatwal J. MSR64 How Is Machine Learning Being Used in HEOR? A Systematic Review of Trends and Methods. Value Health. 2023;26(12):S405.
Zhang C, Ayer T, White CC, Bodeker JN, Roback JD. Inventory Sharing for Perishable Products: Application to Platelet Inventory Management in Hospital Blood Banks. Operations Research. 2023 Dec;71(1).
Ayer T, Merdan S, Mathieu VO, Van Effelterre T, Yildirim I, Tomoka F, Pau M, Bookhart B, Chhatwal J, El Khoury AC. Value Health. 2023;26(6):S275.
Xiao J, Haseeb M, Kanwal F, Kim S, Ayer T, Ajmera V, Huaung DQ, Tincopa M, Loomba R, Chhatwal J. HTA2 Cost-Effectiveness of a Clinical Care Pathway for the Screening of Nonalcoholic Fatty Liver Disease in Patients with Type 2 Diabetes Mellitus. Value Health. 2023;26(12):S320.
Aaron A, Zhong H, Hiebert L, Zhuo Y, Adee M, Paraschiv A, Stratulat S, Ward JW, Chhatwal J. Hepatitis C Elimination in Moldova Is Feasible and Cost-Saving: A Modeling Study. J Infect Dis. 2023 Sep 13;228(Suppl 3):S189-S197. doi: 10.1093/infdis/jiad138. PMID: 37703345.
Ayer T, White III CC, Zhang C. Healthcare Inventory Management. 2023 Feb 3.
Spaulding AC, Kennedy SS, Osei J, Sidibeh E, Batina IV, Chhatwal J, Akiyama MJ, Strick LB. Estimates of Hepatitis C Seroprevalence and Viremia in State Prison Populations in the United States. J Infect Dis. 2023 Sep 13;228(Suppl 3):S160-S167. doi: 10.1093/infdis/jiad227. PMID: 37703336.
Chhatwal J, Mueller PP, Chen Q, Kulkarni N, Adee M, Zarkin G, LaRochelle MR, Knudsen AB, Barbosa C. Estimated Reductions in Opioid Overdose Deaths With Sustainment of Public Health Interventions in 4 US States. JAMA Netw Open. 2023 Jun 1;6(6):e2314925. doi: 10.1001/jamanetworkopen.2023.14925. PMID: 37294571; PMCID: PMC10257094.
Chhatwal J, Aaron A, Loomba R, Haseeb M, Tapper E, Sonawane K, Kanwal F. EPH9 Non-Alcoholic Fatty Liver Disease Awareness in the United States: National Health and Nutrition Examination Survey Data 1999-2020. Value Health. 2023;26(12):S204.
ElHabr AK, Tyson C, Cao X, Merdan S, Raoof S, Ozbay AB, Limburg P, Beer T, Deshmukh AA, Chhatwal J. EPH232 The Large Hidden Prevalence Rate of Cancer Using Backward Induction Method Reveals Screening Opportunity in Earlier Stages Value Health. 2023;26(6):S205.
Chhatwal J, Samur S, Yang JD, Roberts LR, Nguyen MH, Ozbay AB, Ayer T, Parikh ND, Singal AG. Effectiveness of HCC surveillance programs using multitarget blood test: A modeling study. Hepatol Commun. 2023 May 18;7(6):e0146. doi: 10.1097/HC9.0000000000000146. PMID: 37204402; PMCID: PMC10538878.
Merdan S, Kirshner C, Erdogan M, Lydston M, Ayer T, Chhatwal J. EE572 Intersection of Machine Learning and HEOR: A Systematic Review. June 2023; Value in Health 26(6):S163-S164.
Samur S, Rustgi VK, Parikh ND, Yang JD, Roberts LR, Nguyen MH, Ozbay AB, Ayer T, Singal AG, Chhatwal J. EE508 Cost of Liver Cancer Screening in Patients with Cirrhosis. Value Health. 2023;26(6):S152.
McCandlish JA, Ayer T, Chhatwal J. Cost-Effectiveness and Value-of-Information Analysis Using Machine Learning-Based Metamodeling: A Case of Hepatitis C Treatment. Med Decis Making. 2023 Jan;43(1):68-77. doi: 10.1177/0272989X221125418. Epub 2022 Sep 16. PMID: 36113098.
Chhatwal J, ElHabr A, Tyson C, Merdan S, Cao X, Raoof S, Ozbay AB, Fendrick AM, Limburg PJ, Beer TM, Deshmukh A. Correlation of unobserved incidence of cancer in earlier stages with the observed incidence.
Taouli B, Ba-Ssalamah A, Chapiro J, Chhatwal J, Fowler K, Kang TW, Knobloch G, Koh DM, Kudo M, Lee JM, Murakami T, Pinato DJ, Ringe KI, Song B, Tabrizian P, Wang J, Yoon JH, Zeng M, Zhou J, Vilgrain V. Consensus report from the 10th global forum for liver magnetic resonance imaging: multidisciplinary team discussion. Eur Radiol. 2023 Dec;33(12):9167-9181. doi: 10.1007/s00330-023-09919-z. Epub 2023 Jul 13. Erratum in: Eur Radiol. 2023 Nov 6;: PMID: 37439935; PMCID: PMC10667403.
Taouli B, Ba-Ssalamah A, Chapiro J, Chhatwal J, Fowler K, Kang TW, Knobloch G, Koh DM, Kudo M, Lee JM, Murakami T, Pinato DJ, Ringe KI, Song B, Tabrizian P, Wang J, Yoon JH, Zeng M, Zhou J, Vilgrain V. Consensus report from the 10th Global Forum for Liver Magnetic Resonance Imaging: developments in HCC management. Eur Radiol. 2023 Dec;33(12):9152-9166. doi: 10.1007/s00330-023-09928-y. Epub 2023 Jul 27. Erratum in: Eur Radiol. 2023 Dec 19;: PMID: 37500964; PMCID: PMC10730664.
Lopez V, Cramer EY, Pagano R, Drake JM, O'Dea EB, Linas BP, Ayer T, Xiao J, Adee M, Chhatwal J, Ladd MA. Challenges of COVID-19 Case Forecasting in the US, 2020-2021. medRxiv. 2023:2023-05.
Chiosi JJ, Mueller PP, Chhatwal J, Ciaranello AL. A multimorbidity model for estimating health outcomes from the syndemic of injection drug use and associated infections in the United States. BMC Health Serv Res. 2023 Jul 17;23(1):760. doi: 10.1186/s12913-023-09773-1. PMID: 37461007; PMCID: PMC10353126.
Gaglioti AH, Li C, Baltrus PT, She Z, Douglas MD, Moore MA, Rao A, Immergluck LC, Ayer T, Bazemore A, Rust G. Interpersonal primary care continuity for chronic conditions is associated with fewer hospitalizations and emergency department visits among Medicaid enrollees. The Journal of the American Board of Family Medicine. 2023 Apr 3;36(2):303-12.
Chhatwal J, Aaron A, Zhong H, Sood N, Irvin R, Alter HJ, Zhuo Y, Sharfstein JM, Ward JW. Projected Health Benefits and Health Care Savings from the United States National Hepatitis C Elimination Initiative. National Bureau of Economic Research, Inc; 2023 Apr.
Kulkarni NS, Wadhwa DK, Kanwal F, Chhatwal J. Alcohol-Associated Liver Disease Mortality Rates by Race Before and During the COVID-19 Pandemic in the US. JAMA Health Forum. 2023;4(4):e230527. Published 2023 Apr 7. doi:10.1001/jamahealthforum.2023.0527
Castellano T, Moore K, Ting J, Washington C, Yildiz Y, Surinach A, Sonawane K, Chhatwal J, Ayer T. Cervical cancer geographical burden analyzer: An interactive, open-access tool for understanding geographical disease burden in patients with recurrent or metastatic cervical cancer. Gynecol Oncol. 2023 Feb;169:113-117. doi: 10.1016/j.ygyno.2022.12.004. Epub 2022 Dec 20. PMID: 36549175.
Sonawane K, Castellano T, Washington C, Ting J, Surinach A, Kirshner C, Chhatwal J, Ayer T, Moore K. Factors associated with receipt of second-line recurrent or metastatic cervical cancer treatment in the United States: A retrospective administrative claims analysis. Gynecol Oncol Rep. 2022 Dec 13;44:101121. doi: 10.1016/j.gore.2022.101121. PMID: 36589508; PMCID: PMC9797608.
Kramer JR, Cao Y, Li L, Smith D, Chhatwal J, El-Serag HB, Kanwal F. Longitudinal Associations of Risk Factors and Hepatocellular Carcinoma in Patients With Cured Hepatitis C Virus Infection. Am J Gastroenterol. 2022 Nov 1;117(11):1834-1844. doi: 10.14309/ajg.0000000000001968. Epub 2022 Aug 23. PMID: 36327437; PMCID: PMC9641546.
Cramer EY, Huang Y, Wang Y, et al. The United States COVID-19 Forecast Hub dataset. Sci Data. 2022;9(1):462. Published 2022 Aug 1. doi:10.1038/s41597-022-01517-w
Adee M, Zhong H, Ivanova Reipold E, Zhuo Y, Shilton S, Chhatwal J. Cost-Effectiveness of a Core Antigen-Based Rapid Diagnostic Test for Hepatitis C. Value Health. 2022 Jul;25(7):1107-1115. doi: 10.1016/j.jval.2022.01.004. Epub 2022 Mar 7. PMID: 35272954.
Chhatwal J, Dalgic OO, Chen W, Samur S, Bethea ED, Xiao J, et al. Analysis of a Simulation Model to Estimate Long-term Outcomes in Patients with Nonalcoholic Fatty Liver Disease. JAMA Netw Open. 2022;5(9):e2230426.
McCandlish JA, Ayer T, Chhatwal J. Cost-Effectiveness and Value-of-Information Analysis Using Machine Learning-Based Metamodeling: A Case of Hepatitis C Treatment. Med Decis Making. 2022:272989X221125418.
Singal, AG, Haaland, B, Parikh, ND, Ozbay, AB, Kirshner, C, Chakankar, S, Comparison of a multitarget blood test to ultrasound and alpha-fetoprotein for hepatocellular carcinoma surveillance: Results of a network meta-analysis. Hepatol Commun. 2022; 00: 1– 12. https://doi.org/10.1002/hep4.2045
Chen W, Khurshid S, Singer DE, et al. Cost-effectiveness of Screening for Atrial Fibrillation Using Wearable Devices. JAMA Health Forum. 2022;3(8):e222419. doi:10.1001/jamahealthforum.2022.2419
Chhatwal J, Basu A. Cost-Effectiveness of Remdesivir for COVID-19 Treatment: What Are We Missing? Value Health. 2022;25(5):697-8.
Cramer EY, Ray EL, Lopez VK, Bracher J, Brennen A, Castro Rivadeneira AJ, et al. Evaluation of individual and ensemble probabilistic forecasts of COVID-19 mortality in the United States. Proc Natl Acad Sci U S A. 2022;119(15):e2113561119.
Postma MJ, Chhatwal J. COVID-19 Health Economics: Looking Back and Scoping the Future. Value Health. 2022;25(5):695-6.
Linas A, Xiao J, Dalgic OO, Mueller PP, Adee A, Aaron A, Ayer T, Chhatwal J. Projecting COVID-19 Mortality as States Relax Nonpharmacologic Interventions. JAMA Health Forum. 2022;3(4):e220760.
ElHabr A, Merdan S, Ayer T, Prater A, Hanna TN, Horný M, et al. Increasing Utilization of Emergency Department Neuroimaging From 2007 Through 2017. AJR Am J Roentgenol. 2022;218(1):165-73.
Lee BP, Im GY, Rice JP, Lazar A, Weinberg E, Han H, et al. Patterns of Alcohol Use After Early Liver Transplantation for Alcoholic Hepatitis. Clin Gastroenterol Hepatol. 2022;20(2):409-18.e5.
Chhatwal J, Tapper EB. Nonalcoholic Fatty Liver Disease Natural History: Role of Mathematical Modeling. Clin Gastroenterol Hepatol. 2022.
Mueller PP, Chen Q, Ayer T, Nemutlu G, Hajjar A, Bethea ED, et al. Duration and cost-effectiveness of hepatocellular carcinoma surveillance in hepatitis C patients after viral eradication. J Hepatol. 2022.
Ötleş E, Denton BT, Qu B, Murali A, Merdan S, Auffenberg GB, et al. Development and Validation of Models to Predict Pathological Outcomes of Radical Prostatectomy in Regional and National Cohorts. J Urol. 2022;207(2):358-66.
Damgacioglu H, Sonawane K, Chhatwal J, Lairson DR, Clifford GM, Giuliano AR, et al. Long-term impact of HPV vaccination and COVID-19 pandemic on oropharyngeal cancer incidence and burden among men in the USA: A modeling study. Lancet Reg Health Am. 2022;8:100143.
Merdan S, Subramanian K, Ayer T, Van Weyenbergh J, Chang A, Koff JL, et al. Gene expression profiling-based risk prediction and profiles of immune infiltration in diffuse large B-cell lymphoma. Blood Cancer J. 2021;11(1):2.
Markby J, Shilton S, Sem X, Chan HK, Md Said R, Siva S, et al. Assessing the impact of simplified HCV care on linkage to care amongst high-risk patients at primary healthcare clinics in Malaysia: a prospective observational study. BMJ Open. 2021;11(12):e055142.
Julien J, Ayer T, Tapper EB, Barbosa C, Dowd WN, Chhatwal J. Effect of increased alcohol consumption during COVID-19 pandemic on alcohol-associated liver disease: A modeling study. Hepatology. 2021.
Khurshid S, Chen W, Singer DE, Atlas SJ, Ashburner JM, Choi JG, et al. Comparative Clinical Effectiveness of Population-Based Atrial Fibrillation Screening Using Contemporary Modalities: A Decision-Analytic Model. J Am Heart Assoc. 2021;10(18):e020330.
Khurshid S, Chen W, Bode WD, Wasfy JH, Chhatwal J, Lubitz SA. Comparative Effectiveness of Implantable Defibrillators for Asymptomatic Brugada Syndrome: A Decision-Analytic Model. J Am Heart Assoc. 2021;10(16):e021144.
Jang H, Ozkaynak M, Amura CR, Ayer T, Sills MR. Analysis of medication patterns for pediatric asthma patients in emergency department: Does the sequence placement of glucocorticoids administration matter? J Asthma. 2021;58(2):180-9.
Dalgıç Ö, Wu H, Safa Erenay F, Sir MY, Özaltın OY, Crum BA, et al. Mapping of critical events in disease progression through binary classification: Application to amyotrophic lateral sclerosis. J Biomed Inform. 2021;123:103895.
Deshmukh AA, Suk R, Shiels MS, Damgacioglu H, Lin YY, Stier EA, et al. Incidence Trends and Burden of Human Papillomavirus-Associated Cancers Among Women in the United States, 2001-2017. J Natl Cancer Inst. 2021;113(6):792-6.
Linas BP, Savinkina A, Barbosa C, Mueller PP, Cerdá M, Keyes K, et al. A clash of epidemics: Impact of the COVID-19 pandemic response on opioid overdose. J Subst Abuse Treat. 2021;120:108158.
Toumi A, Zhao H, Chhatwal J, Linas BP, Ayer T. Association of Limited In-Person Attendance in US National Football League and National Collegiate Athletic Association Games With County-Level COVID-19 Cases. JAMA Netw Open. 2021;4(8):e2119621.
Markby J, Gupta E, Soni D, Sarin S, Murya M, Katapur P, et al. Feasibility, effectiveness and cost of a decentralized HCV care model among the general population in Delhi, India. Liver Int. 2021.
Jang H, Ozkaynak M, Ayer T, Sills MR. Factors Associated With First Medication Time for Children Treated in the Emergency Department for Asthma. Pediatr Emerg Care. 2021;37(1):e42-e7.
Adee M, Zhuo Y, Zhong H, Zhan T, Aggarwal R, Shilton S, et al. Assessing cost-effectiveness of hepatitis C testing pathways in Georgia using the Hep C Testing Calculator. Sci Rep. 2021;11(1):21382.
Toumi A, DiGennaro C, Vahdat V, Jalali MS, Gazelle GS, Chhatwal J, et al. Trends in Thyroid Surgery and Guideline-Concordant Care in the United States, 2007-2018. Thyroid. 2021;31(6):941-9.
Chhatwal J, Postma MJ. Health Economics of Interventions to Tackle the Coronavirus 2019 Pandemic. Value Health. 2021;24(5):605-6.
Hornberger J, Chhatwal J. Opioid Misuse: A Global Crisis. Value Health. 2021;24(2):145-6.
Butala NM, Patel NK, Chhatwal J, Vahdat V, Pomerantsev EV, Albaghdadi M, et al. Patient and Provider Risk in Managing ST-Elevation Myocardial Infarction During the COVID-19 Pandemic: A Decision Analysis. Circ Cardiovasc Interv. 2020;13(11):e010027.
Aldridge AP, Barbosa C, Barocas JA, Bush JL, Chhatwal J, Harlow KJ, et al. Health economic design for cost, cost-effectiveness and simulation analyses in the HEALing Communities Study. Drug Alcohol Depend. 2020;217:108336.
Ebrahim S, Ashworth H, Noah C, Kadambi A, Toumi A, Chhatwal J. Reduction of COVID-19 Incidence and Nonpharmacologic Interventions: Analysis Using a US County-Level Policy Data Set. J Med Internet Res. 2020;22(12):e24614.
She Z, Gaglioti AH, Baltrus P, Li C, Moore MA, Immergluck LC, et al. Primary Care Comprehensiveness and Care Coordination in Robust Specialist Networks Results in Lower Emergency Department Utilization: A Network Analysis of Medicaid Physician Networks. J Prim Care Community Health. 2020;11:2150132720924432.
Chen Q, Ayer T, Adee MG, Wang X, Kanwal F, Chhatwal J. Assessment of Incidence of and Surveillance Burden for Hepatocellular Carcinoma Among Patients With Hepatitis C in the Era of Direct-Acting Antiviral Agents. JAMA Netw Open. 2020;3(11):e2021173.
Julien J, Ayer T, Bethea ED, Tapper EB, Chhatwal J. Projected prevalence and mortality associated with alcohol-related liver disease in the USA, 2019-40: a modelling study. Lancet Public Health. 2020;5(6):e316-e23.
Hatzakis A, Lazarus JV, Cholongitas E, Baptista-Leite R, Boucher C, Busoi CS, et al. Securing sustainable funding for viral hepatitis elimination plans. Liver Int. 2020;40(2):260-70.
Tapper EB, Chhatwal J. We are Not Meeting the Needs of Pharmacoeconomic Models of Nonalcoholic Steatohepatitis, But We Can. Pharmacoeconomics. 2020;38(5):427-9.
Fujimoto AB, Ayer T, Caughey AB, Keskinocak P. A comparison of first trimester prenatal screening strategies for Down Syndrome with maternal age and preferences considerations. Prenat Diagn. 2020;40(12):1553-62.
Zhuo Y, Hayashi T, Chen Q, Aggarwal R, Hutin Y, Chhatwal J. Estimating the price at which hepatitis C treatment with direct-acting antivirals would be cost-saving in Japan. Sci Rep. 2020;10(1):4089.
Ozturk A, Mohammadi R, Pierce TT, Kamarthi S, Dhyani M, Grajo JR, et al. Diagnostic Accuracy of Shear Wave Elastography as a Non-invasive Biomarker of High-Risk Non-alcoholic Steatohepatitis in Patients with Non-alcoholic Fatty Liver Disease. Ultrasound Med Biol. 2020;46(4):972-80.
Tordrup D, Hutin Y, Stenberg K, Lauer JA, Hutton DW, Toy M, et al. Cost-Effectiveness of Testing and Treatment for Hepatitis B Virus and Hepatitis C Virus Infections: An Analysis by Scenarios, Regions, and Income. Value Health. 2020;23(12):1552-60.
Chhatwal J, Chen Q, Bethea ED, Hur C, Spaulding AC, Kanwal F. The impact of direct-acting anti-virals on the hepatitis C care cascade: identifying progress and gaps towards hepatitis C elimination in the United States. Aliment Pharmacol Ther. 2019;50(1):66-74.
Jahn B, Todorovic J, Bundo M, Sroczynski G, Conrads-Frank A, Rochau U, et al. Budget Impact Analysis of Cancer Screening: A Methodological Review. Appl Health Econ Health Policy. 2019;17(4):493-511.
Chen Q, Ayer T, Bethea E, Kanwal F, Wang X, Roberts M, et al. Changes in hepatitis C burden and treatment trends in Europe during the era of direct-acting antivirals: a modelling study. BMJ Open. 2019;9(6):e026726.
Çağlayan Ç, Goldstein JS, Ayer T, Rai A, Flowers CR. A population-based multistate model for diffuse large B-cell lymphoma-specific mortality in older patients. Cancer. 2019;125(11):1837-47.
Bethea ED, Samur S, Kanwal F, Ayer T, Hur C, Roberts MS, et al. Cost Effectiveness of Transplanting HCV-Infected Livers Into Uninfected Recipients With Preemptive Antiviral Therapy. Clin Gastroenterol Hepatol. 2019;17(4):739-47.e8.
Chhatwal J, Sussman NL. Universal Screening for Hepatitis C: An Important Step in Virus Elimination. Clin Gastroenterol Hepatol. 2019;17(5):835-7.
Çağlayan Ç, Terawaki H, Ayer T, Goldstein JS, Rai A, Chen Q, et al. Assessing the Effectiveness of Treatment Sequences for Older Patients With High-risk Follicular Lymphoma With a Multistate Model. Clin Lymphoma Myeloma Leuk. 2019;19(5):300-9.e5.
Harkins RA, Chang A, Patel SP, Lee MJ, Goldstein JS, Merdan S, et al. Remaining challenges in predicting patient outcomes for diffuse large B-cell lymphoma. Expert Rev Hematol. 2019;12(11):959-73.
Lee BP, Samur S, Dalgic OO, Bethea ED, Lucey MR, Weinberg E, et al. Model to Calculate Harms and Benefits of Early vs Delayed Liver Transplantation for Patients With Alcohol-Associated Hepatitis. Gastroenterology. 2019;157(2):472-80.e5.
Spaulding AC, Graham CS, Akiyama MJ, Chhatwal J, Nijhawan AE, Ninburg MH, et al. Letter to the Editor: Hepatitis C Virus Prevalence Estimates Among Incarcerated Persons. Hepatology. 2019;70(2):758-9.
Spaulding AC, Chhatwal J, Adee MG, Lawrence RT, Beckwith CG, von Oehsen W. Funding Hepatitis C Treatment in Correctional Facilities by Using a Nominal Pricing Mechanism. J Correct Health Care. 2019;25(1):15-24.
Sonawane K, Chhatwal J, Deshmukh AA. Folic Acid-Containing Dietary Supplement Consumption and Risk of Cardiovascular Diseases in Rheumatoid Arthritis Patients: NHANES 1999-2014. J Gen Intern Med. 2019;34(1):15-6.
Dalgıç Ö, Erenay FS, Pasupathy KS, Özaltın OY, Crum BA, Sir MY. Tollgate-based progression pathways of ALS patients. J Neurol. 2019;266(3):755-65.
Chhatwal J, Chen Q, Wang X, Ayer T, Zhuo Y, Janjua NZ, et al. Assessment of the Feasibility and Cost of Hepatitis C Elimination in Pakistan. JAMA Netw Open. 2019;2(5):e193613.
Sonawane K, Nyitray AG, Nemutlu GS, Swartz MD, Chhatwal J, Deshmukh AA. Prevalence of Human Papillomavirus Infection by Number of Vaccine Doses Among US Women. JAMA Netw Open. 2019;2(12):e1918571.
Klebanoff MJ, Corey KE, Samur S, Choi JG, Kaplan LM, Chhatwal J, et al. Cost-effectiveness Analysis of Bariatric Surgery for Patients With Nonalcoholic Steatohepatitis Cirrhosis. JAMA Netw Open. 2019;2(2):e190047.
Chen Q, Larochelle MR, Weaver DT, Lietz AP, Mueller PP, Mercaldo S, et al. Prevention of Prescription Opioid Misuse and Projected Overdose Deaths in the United States. JAMA Netw Open. 2019;2(2):e187621.
Jahn B, Kurzthaler C, Chhatwal J, Elbasha EH, Conrads-Frank A, Rochau U, et al. Alternative Conversion Methods for Transition Probabilities in State-Transition Models: Validity and Impact on Comparative Effectiveness and Cost-Effectiveness. Med Decis Making. 2019;39(5):509-22.
Miksch F, Jahn B, Espinosa KJ, Chhatwal J, Siebert U, Popper N. Why should we apply ABM for decision analysis for infectious diseases?-An example for dengue interventions. PLoS One. 2019;14(8):e0221564.
Dalgic OO, Samur S, Spaulding AC, Llerena S, Cobo C, Ayer T, et al. Improved Health Outcomes from Hepatitis C Treatment Scale-Up in Spain's Prisons: A Cost-Effectiveness Study. Sci Rep. 2019;9(1):16849.
Besa C, Lewis S, Pandharipande PV, Chhatwal J, Kamath A, Cooper N, et al. Erratum to: Hepatocellular carcinoma detection: diagnostic performance of a simulated abbreviated MRI protocol combining diffusion-weighted and T1-weighted imaging at the delayed phase post gadoxetic acid. Abdom Radiol (NY). 2018;43(3):760.
Chhatwal J, Chen Q, Ayer T, Bethea ED, Kanwal F, Kowdley KV, et al. Hepatitis C virus re-treatment in the era of direct-acting antivirals: projections in the USA. Aliment Pharmacol Ther. 2018;47(7):1023-31.
Arsik I, Frediani JK, Frezza D, Chen W, Ayer T, Keskinocak P, et al. Alanine Aminotransferase as a Monitoring Biomarker in Children with Nonalcoholic Fatty Liver Disease: A Secondary Analysis Using TONIC Trial Data. Children (Basel). 2018;5(6).
Chhatwal J, Kanwal F. Cost-effectiveness and Decision Analysis in Clinical Gastroenterology and Hepatology: From Evidence to Informed Decision Making. Clin Gastroenterol Hepatol. 2018;16(4):459-61.
Samur S, Kues B, Ayer T, Roberts MS, Kanwal F, Hur C, et al. Cost Effectiveness of Pre- vs Post-Liver Transplant Hepatitis C Treatment With Direct-Acting Antivirals. Clin Gastroenterol Hepatol. 2018;16(1):115-22.e10.
Chhatwal J. Hepatitis C Screening: From Modeling to Public Health Policy. Clin Infect Dis. 2018;66(3):385-6.
Vlachy J, Jo M, Li Q, Ayer T, Keskinocak P, Swann J, et al. Risk Factors for Seizures Among Young Children Monitored With Continuous Electroencephalography in Intensive Care Unit: A Retrospective Study. Front Pediatr. 2018;6:303.
Bethea ED, Chen Q, Hur C, Chung RT, Chhatwal J. Should we treat acute hepatitis C? A decision and cost-effectiveness analysis. Hepatology. 2018;67(3):837-46.
Chhatwal J, Samur S, Bethea ED, Ayer T, Kanwal F, Hur C, et al. Transplanting hepatitis C virus-positive livers into hepatitis C virus-negative patients with preemptive antiviral treatment: A modeling study. Hepatology. 2018;67(6):2085-95.
Spaulding AC, Adee MG, Lawrence RT, Chhatwal J, von Oehsen W. Five Questions Concerning Managing Hepatitis C in the Justice System: Finding Practical Solutions for Hepatitis C Virus Elimination. Infect Dis Clin North Am. 2018;32(2):323-45.
Chhatwal J, Chen Q, Aggarwal R. Estimation of Hepatitis C Disease Burden and Budget Impact of Treatment Using Health Economic Modeling. Infect Dis Clin North Am. 2018;32(2):461-80.
Goel A, Chen Q, Chhatwal J, Aggarwal R. Cost-effectiveness of generic pan-genotypic sofosbuvir/velpatasvir versus genotype-dependent direct-acting antivirals for hepatitis C treatment. J Gastroenterol Hepatol. 2018;33(12):2029-36.
Papatheodoridis GV, Hatzakis A, Cholongitas E, Baptista-Leite R, Baskozos I, Chhatwal J, et al. Hepatitis C: The beginning of the end-key elements for successful European and national strategies to eliminate HCV in Europe. J Viral Hepat. 2018;25 Suppl 1:6-17.
Çağlayan Ç, Terawaki H, Chen Q, Rai A, Ayer T, Flowers CR. Microsimulation Modeling in Oncology. JCO Clin Cancer Inform. 2018;2:1-11.
Deshmukh AA, Shirvani SM, Likhacheva A, Chhatwal J, Chiao EY, Sonawane K. The Association Between Dietary Quality and Overall and Cancer-Specific Mortality Among Cancer Survivors, NHANES III. JNCI Cancer Spectr. 2018;2(2):pky022.
Chhatwal J, Chen Q, Bethea ED, Ladd MA, Mueller PP, Hutin Y, et al. Hep C Calculator: an online tool for cost-effectiveness analysis of DAAs. Lancet Gastroenterol Hepatol. 2018;3(12):819.
Chen Q, Staton AD, Ayer T, Goldstein DA, Koff JL, Flowers CR. Exploring the potential cost-effectiveness of precision medicine treatment strategies for diffuse large B-cell lymphoma. Leuk Lymphoma. 2018;59(7):1700-9.
Besa C, Lewis S, Pandharipande PV, Chhatwal J, Kamath A, Cooper N, et al. Hepatocellular carcinoma detection: diagnostic performance of a simulated abbreviated MRI protocol combining diffusion-weighted and T1-weighted imaging at the delayed phase post gadoxetic acid. Abdom Radiol (NY). 2017;42(1):179-90.
He T, Lopez-Olivo MA, Hur C, Chhatwal J. Systematic review: cost-effectiveness of direct-acting antivirals for treatment of hepatitis C genotypes 2-6. Aliment Pharmacol Ther. 2017;46(8):711-21.
Sonawane K, Suk R, Chiao EY, Chhatwal J, Qiu P, Wilkin T, et al. Oral Human Papillomavirus Infection: Differences in Prevalence Between Sexes and Concordance With Genital Human Papillomavirus Infection, NHANES 2011 to 2014. Ann Intern Med. 2017;167(10):714-24.
Deshmukh AA, Chiao EY, Cantor SB, Stier EA, Goldstone SE, Nyitray AG, et al. Management of precancerous anal intraepithelial lesions in human immunodeficiency virus-positive men who have sex with men: Clinical effectiveness and cost-effectiveness. Cancer. 2017;123(23):4709-19.
Chhatwal J, He T, Hur C, Lopez-Olivo MA. Direct-Acting Antiviral Agents for Patients With Hepatitis C Virus Genotype 1 Infection Are Cost-Saving. Clin Gastroenterol Hepatol. 2017;15(6):827-37.e8.
Kabiri M, Chhatwal J, Donohue JM, Roberts MS, James AE, Dunn MA, et al. Long-term disease and economic outcomes of prior authorization criteria for Hepatitis C treatment in Pennsylvania Medicaid. Healthc (Amst). 2017;5(3):105-11.
Chhatwal J, Samur S, Kues B, Ayer T, Roberts MS, Kanwal F, et al. Optimal timing of hepatitis C treatment for patients on the liver transplant waiting list. Hepatology. 2017;65(3):777-88.
Klebanoff MJ, Corey KE, Chhatwal J, Kaplan LM, Chung RT, Hur C. Bariatric surgery for nonalcoholic steatohepatitis: A clinical and cost-effectiveness analysis. Hepatology. 2017;65(4):1156-64.
Samur S, Klebanoff M, Banken R, Pratt DS, Chapman R, Ollendorf DA, et al. Long-term clinical impact and cost-effectiveness of obeticholic acid for the treatment of primary biliary cholangitis. Hepatology. 2017;65(3):920-8.
Chen Q, Jain N, Ayer T, Wierda WG, Flowers CR, O'Brien SM, et al. Economic Burden of Chronic Lymphocytic Leukemia in the Era of Oral Targeted Therapies in the United States. J Clin Oncol. 2017;35(2):166-74.
Rodriguez Ruiz A, Vlachy J, Lee JW, Gilmore EJ, Ayer T, Haider HA, et al. Association of Periodic and Rhythmic Electroencephalographic Patterns With Seizures in Critically Ill Patients. JAMA Neurol. 2017;74(2):181-8.
Klebanoff MJ, Chhatwal J, Hur C. Acceptance of Surgical Treatment for Adolescent Obesity-Reply. JAMA Surg. 2017;152(8):802.
Klebanoff MJ, Chhatwal J, Nudel JD, Corey KE, Kaplan LM, Hur C. Cost-effectiveness of Bariatric Surgery in Adolescents With Obesity. JAMA Surg. 2017;152(2):136-41.
Capan M, Khojandi A, Denton BT, Williams KD, Ayer T, Chhatwal J, et al. From Data to Improved Decisions: Operations Research in Healthcare Delivery. Med Decis Making. 2017;37(8):849-59.
Chen Q, Ayer T, Chhatwal J. Sensitivity Analysis in Sequential Decision Models. Med Decis Making. 2017;37(2):243-52.
Goldstein DA, Chen Q, Ayer T, Chan KKW, Virik K, Hammerman A, et al. Bevacizumab for Metastatic Colorectal Cancer: A Global Cost-Effectiveness Analysis. Oncologist. 2017;22(6):694-9.
Dalgıç Ö, Özaltın OY, Ciccotelli WA, Erenay FS. Deriving effective vaccine allocation strategies for pandemic influenza: Comparison of an agent-based simulation and a compartmental model. PLoS One. 2017;12(2):e0172261.
Aggarwal R, Chen Q, Goel A, Seguy N, Pendse R, Ayer T, et al. Cost-effectiveness of hepatitis C treatment using generic direct-acting antivirals available in India. PLoS One. 2017;12(5):e0176503.
Yan J, Ayer T, Keskinocak P, Caughey A. Age-based differences in the predictive accuracy of a one-size-fits-all risk-cutoff value in prenatal integrated screening for Down syndrome. Prenat Diagn. 2017;37(9):894-8.
Auffenberg GB, Merdan S, Miller DC, Singh K, Stockton BR, Ghani KR, et al. Evaluation of Prostate Cancer Risk Calculators for Shared Decision Making Across Diverse Urology Practices in Michigan. Urology. 2017;104:137-42.
Deshmukh AA, Cantor SB, Fenwick E, Chiao EY, Nyitray AG, Stier EA, et al. Adjuvant HPV vaccination for anal cancer prevention in HIV-positive men who have sex with men: The time is now. Vaccine. 2017;35(38):5102-9.
He T, Li K, Roberts MS, Spaulding AC, Ayer T, Grefenstette JJ, et al. Prevention of Hepatitis C by Screening and Treatment in U.S. Prisons. Ann Intern Med. 2016;164(2):84-92.
Rust G, Zhang S, Yu Z, Caplan L, Jain S, Ayer T, et al. Counties eliminating racial disparities in colorectal cancer mortality. Cancer. 2016;122(11):1735-48.
Chhatwal J, Wang X, Ayer T, Kabiri M, Chung RT, Hur C, et al. Hepatitis C Disease Burden in the United States in the era of oral direct-acting antivirals. Hepatology. 2016;64(5):1442-50.
Chen Q, Ayer T, Nastoupil LJ, Koff JL, Staton AD, Chhatwal J, et al. Population-specific prognostic models are needed to stratify outcomes for African-Americans with diffuse large B-cell lymphoma. Leuk Lymphoma. 2016;57(4):842-51.
Elbasha EH, Chhatwal J. Theoretical Foundations and Practical Applications of Within-Cycle Correction Methods. Med Decis Making. 2016;36(1):115-31.
Chhatwal J, Jayasuriya S, Elbasha EH. Changing Cycle Lengths in State-Transition Models: Challenges and Solutions. Med Decis Making. 2016;36(8):952-64.
Elbasha EH, Chhatwal J. Myths and Misconceptions of Within-Cycle Correction: A Guide for Modelers and Decision Makers. Pharmacoeconomics. 2016;34(1):13-22.
Chhatwal J, He T, Lopez-Olivo MA. Systematic Review of Modelling Approaches for the Cost Effectiveness of Hepatitis C Treatment with Direct-Acting Antivirals. Pharmacoeconomics. 2016;34(6):551-67.
Guirguis J, Chhatwal J, Dasarathy J, Rivas J, McMichael D, Nagy LE, et al. Clinical impact of alcohol-related cirrhosis in the next decade: estimates based on current epidemiological trends in the United States. Alcohol Clin Exp Res. 2015;39(11):2085-94.
Chhatwal J, Kanwal F, Roberts MS, Dunn MA. Cost-effectiveness and budget impact of hepatitis C virus treatment with sofosbuvir and ledipasvir in the United States. Ann Intern Med. 2015;162(6):397-406.
Chhatwal J, Mathisen M, Kantarjian H. Are high drug prices for hematologic malignancies justified? A critical analysis. Cancer. 2015;121(19):3372-9.
Chhatwal J, Mathisen MS, Kantarjian HM. Reply to price and value in cancer care. Cancer. 2015;121(22):4098-9.
Merdan S, Tomlins SA, Barnett CL, Morgan TM, Montie JE, Wei JT, et al. Assessment of long-term outcomes associated with urinary prostate cancer antigen 3 and TMPRSS2:ERG gene fusion at repeat biopsy. Cancer. 2015;121(22):4071-9.
Chhatwal J, Chen Q, Kanwal F. Why We Should Be Willing to Pay for Hepatitis C Treatment. Clin Gastroenterol Hepatol. 2015;13(10):1711-3.
Deshmukh AA, Chhatwal J, Chiao EY, Nyitray AG, Das P, Cantor SB. Long-Term Outcomes of Adding HPV Vaccine to the Anal Intraepithelial Neoplasia Treatment Regimen in HIV-Positive Men Who Have Sex With Men. Clin Infect Dis. 2015;61(10):1527-35.
Seymour CW, Alotaik O, Wallace DJ, Elhabashy AE, Chhatwal J, Rea TD, et al. County-Level Effects of Prehospital Regionalization of Critically Ill Patients: A Simulation Study. Crit Care Med. 2015;43(9):1807-15.
Staton AD, Koff JL, Chen Q, Ayer T, Flowers CR. Next-generation prognostic assessment for diffuse large B-cell lymphoma. Future Oncol. 2015;11(17):2443-57.
Bonifonte A, Ayer T, Veledar E, Clark A, Wilson PW. Antecedent blood pressure as a predictor of cardiovascular disease. J Am Soc Hypertens. 2015;9(9):690-6.e1.
Goldstein DA, Ahmad BB, Chen Q, Ayer T, Howard DH, Lipscomb J, et al. Cost-Effectiveness Analysis of Regorafenib for Metastatic Colorectal Cancer. J Clin Oncol. 2015;33(32):3727-32.
Goldstein DA, Chen Q, Ayer T, Howard DH, Lipscomb J, El-Rayes BF, et al. First- and second-line bevacizumab in addition to chemotherapy for metastatic colorectal cancer: a United States-based cost-effectiveness analysis. J Clin Oncol. 2015;33(10):1112-8.
Goldstein DA, Chen Q, Ayer T, Howard DH, Lipscomb J, Ramalingam SS, et al. Necitumumab in Metastatic Squamous Cell Lung Cancer: Establishing a Value-Based Cost. JAMA Oncol. 2015;1(9):1293-300.
Elbasha EH, Chhatwal J. Characterizing Heterogeneity Bias in Cohort-Based Models. Pharmacoeconomics. 2015;33(8):857-65.
Chhatwal J, He T. Economic evaluations with agent-based modelling: an introduction. Pharmacoeconomics. 2015;33(5):423-33.
Yan J, Ayer T, Keskinocak P, Caughey AB. Preference-sensitive risk-cutoff values for prenatal-integrated screening test for Down syndrome. Prenat Diagn. 2015;35(7):645-51.
Liu J, Womble PR, Merdan S, Miller DC, Montie JE, Denton BT, et al. Factors Influencing Selection of Active Surveillance for Localized Prostate Cancer. Urology. 2015;86(5):901-5.
Chen Q, Ayer T, Nastoupil LJ, Rose AC, Flowers CR. Comparing the cost-effectiveness of rituximab maintenance and radioimmunotherapy consolidation versus observation following first-line therapy in patients with follicular lymphoma. Value Health. 2015;18(2):189-97.
Wallace DJ, Kahn JM, Angus DC, Martin-Gill C, Callaway CW, Rea TD, et al. Accuracy of prehospital transport time estimation. Acad Emerg Med. 2014;21(1):9-16.
Kabiri M, Jazwinski AB, Roberts MS, Schaefer AJ, Chhatwal J. The changing burden of hepatitis C virus infection in the United States: model-based predictions. Ann Intern Med. 2014;161(3):170-80.
Ayvaci MU, Alagoz O, Chhatwal J, Munoz del Rio A, Sickles EA, Nassif H, et al. Predicting invasive breast cancer versus DCIS in different age groups. BMC Cancer. 2014;14:584.
Goldstein DA, Chen Q, Ayer T, Howard DH, Lipscomb J, Harvey RD, et al. Cost effectiveness analysis of pharmacokinetically-guided 5-fluorouracil in FOLFOX chemotherapy for metastatic colorectal cancer. Clin Colorectal Cancer. 2014;13(4):219-25.
Risko R, Merdan S, Womble PR, Barnett C, Ye Z, Linsell SM, et al. Clinical predictors and recommendations for staging computed tomography scan among men with prostate cancer. Urology. 2014;84(6):1329-34.
Merdan S, Womble PR, Miller DC, Barnett C, Ye Z, Linsell SM, et al. Toward better use of bone scans among men with early-stage prostate cancer. Urology. 2014;84(4):793-8.
Rochau U, Kühne F, Jahn B, Kurzthaler C, Corro RI, Chhatwal J, et al. Prioritization of Future Outcomes Research Studies in Chronic Myeloid Leukemia: Value of Information Analysis. Value Health. 2014;17(7):A639.
Elbasha EH, Chhatwal J, Ferrante SA, El Khoury AC, Laires PA. Cost-effectiveness analysis of boceprevir for the treatment of chronic hepatitis C virus genotype 1 infection in Portugal. Appl Health Econ Health Policy. 2013;11(1):65-78.
Ferrante SA, Chhatwal J, Brass CA, El Khoury AC, Poordad F, Bronowicki JP, et al. Boceprevir for previously untreated patients with chronic hepatitis C Genotype 1 infection: a US-based cost-effectiveness modeling study. BMC Infect Dis. 2013;13:190.
Ayer T, Chen Q, Burnside ES. Artificial neural networks in mammography interpretation and diagnostic decision making. Comput Math Methods Med. 2013;2013:832509.
Alagoz O, Chhatwal J, Burnside ES. Optimal Policies for Reducing Unnecessary Follow-up Mammography Exams in Breast Cancer Diagnosis. Decis Anal. 2013;10(3):200-24.
Chhatwal J, Ferrante SA, Brass C, El Khoury AC, Burroughs M, Bacon B, et al. Cost-effectiveness of boceprevir in patients previously treated for chronic hepatitis C genotype 1 infection in the United States. Value Health. 2013;16(6):973-86.
Chen Q, Ayer T, Nastoupil LJ, Seward M, Zhang H, Sinha R, et al. Initial management strategies for follicular lymphoma. Int J Hematol Oncol. 2012;1(1):35-45.
Burnside ES, Chhatwal J, Alagoz O. What is the optimal threshold at which to recommend breast biopsy? PLoS One. 2012;7(11):e48820.
Ayer T, Alagoz O, Chhatwal J, Shavlik JW, Kahn CE, Burnside ES. Breast cancer risk estimation with artificial neural networks revisited: discrimination and calibration. Cancer. 2010;116(14):3310-21.
Ayer T, Ayvaci MU, Liu ZX, Alagoz O, Burnside ES. Computer-aided diagnostic models in breast cancer screening. Imaging Med. 2010;2(3):313-23.
Chhatwal J, Alagoz O, Burnside ES. Optimal Breast Biopsy Decision-Making Based on Mammographic Features and Demographic Factors. Oper Res. 2010;58(6):1577-91.
Ayer T, Chhatwal J, Alagoz O, Kahn CE, Woods RW, Burnside ES. Informatics in radiology: comparison of logistic regression and artificial neural network models in breast cancer risk estimation. Radiographics. 2010;30(1):13-22.
Chhatwal J, Alagoz O, Lindstrom MJ, Kahn CE, Shaffer KA, Burnside ES. A logistic regression model based on the national mammography database format to aid breast cancer diagnosis. AJR Am J Roentgenol. 2009;192(4):1117-27.
Burnside ES, Davis J, Chhatwal J, Alagoz O, Lindstrom MJ, Geller BM, et al. Probabilistic computer model developed from clinical data in national mammography database format to classify mammographic findings. Radiology. 2009;251(3):663-72.
Littrell KH, Petty RG, Hilligoss NM, Kirshner CD, Johnson CG. Valproate for hostility in schizophrenia patients. J Clin Psychiatry. 2004;65(1):134.
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Littrell KH, Petty RG, Hilligoss NM, Kirshner CD, Johnson CG. The effect of olanzapine on anxiety among patients with schizophrenia: preliminary findings. J Clin Psychopharmacol. 2003;23(5):523-5.
Littrell KH, Hilligoss NM, Kirshner CD, Petty RG, Johnson CG. The effects of an educational intervention on antipsychotic-induced weight gain. J Nurs Scholarsh. 2003;35(3):237-41.
Littrell KH, Petty RG, Hilligoss NM, Peabody CD, Johnson CG. Weight loss associated with olanzapine treatment. J Clin Psychopharmacol. 2002;22(4):436-7.
Littrell KH, Petty RG, Hiligoss NM, Peabody CD, Johnson CG. Weight loss with topiramate. Ann Pharmacother. 2001;35(9):1141-2.
Littrell KH, Petty RG, Peabody CD, Hilligoss NM, Johnson CG. Treatment of preexisting diabetes with olanzapine. J Clin Psychiatry. 2001;62(9):733-4.
Littrell KH, Petty RG, Hilligoss NM, Peabody CD, Johnson CG. Olanzapine treatment for patients with schizophrenia and substance abuse. J Subst Abuse Treat. 2001;21(4):217-21.
Littrell KH, Johnson CG, Peabody CD, Hilligoss N. Antipsychotics during pregnancy. Am J Psychiatry. 2000;157(8):1342.
Littrell KH, Johnson CG, Hilligoss NM, Peabody CD, Littrell SH. Switching clozapine responders to olanzapine. J Clin Psychiatry. 2000;61(12):912-5.
Littrell KH, Johnson CG, Littrell S, Peabody CD. Marked reduction of tardive dyskinesia with olanzapine. Arch Gen Psychiatry. 1998;55(3):279-80.
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Littrell K, Peabody CD, Littrell SH. Olanzapine: a new atypical antipsychotic. J Psychosoc Nurs Ment Health Serv. 1996;34(8):41-6.

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