Ekonomi Bölümü Koleksiyonu
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Conference Object 19th Eurasia Business and Economics Society Conference - Exports in Manufacturing(2016) Karamollaoğlu, Nazlı...Conference Object A Comparative Analysis of the Health Care Utilization and Costs of Patients Diagnosed With and Without Liver Cancer in the Us Medicare Population(2017) Ogbomo, A.; Lin, Y.; Keshishian, A; Xie, L; Yuce, H; Başer, Onur...Article Citation - WoS: 18Citation - Scopus: 18Adding Rapid-Acting Insulin or Glp-1 Receptor Agonist To Basal Insulin: Outcomes in a Community Setting(2015) Dalal, Mehul R; DiGenio, Andres; Xie, Lin; Başer, OnurTo evaluate real-world outcomes in patients with type 2 diabetes mellitus (T2DM)receiving basal insulin, who initiate add-on therapy with a rapid-acting insulin (RAI) or aglucagon-like peptide 1 (GLP-1) receptor agonist.Data were extracted retrospectively from a U.S. health claims database. Adults withT2DM on basal insulin who added an RAI (basal+RAI) or GLP-1 receptor agonist (basal+GLP-1) were included. Propensity score matching (1 up to 3 ratio) was used to control for differencesin baseline demographics, clinical characteristics, and health resource utilization. Endpointsincluded prevalence of hypoglycemia, pancreatic events, all-cause and diabetes-relatedresource utilization, and costs at 1 year follow-up. Overall, 6,718 matched patients were included: 5,013 basal+RAI and 1,705basal+GLP1. Patients in both groups experienced a similar proportion of any hypoglycemicevent (P = .4079). Hypoglycemic events leading to hospitalization were higher in the basal+RAIcohort (2.7% vs. 1.8%; P = .0444). The basal+GLP-1 cohort experienced fewer all-cause(13.55% vs. 18.61%; P<.0001) and diabetes-related hospitalizations (11.79% vs. 15.68%;P<.0001). The basal+GLP-1 cohort had lower total all-cause health care costs ($18,413 vs.$20,821; P = .0002), but similar diabetes-related costs ($9,134 vs. $8,985; P<.0001) comparedwith the basal+RAI cohort. Add-on therapy with a GLP-1 receptor agonist in T2DM patients receiving basalinsulin was associated with fewer hospitalizations and lower total all-cause costs compared withadd-on therapy using a RAI, and could be considered an alternative to a RAI in certain patientswith T2DM, who do not achieve effective glycemic control with basal insulin.Article Citation - WoS: 5Citation - Scopus: 7Arbitrageur Behavior in Sentiment-Driven Asset-Pricing(World Scientific Publishing, 2021) Kılıç, Erdem; Oğuzhan, GökselThis study aims to model arbitrageur behavior in a sentiment-driven capital asset-pricing model under the premise of reflecting a more detailed decomposition of investor types in the equity markets. We explore the behavior and the impact of arbitrageur behavior, particularly, on pricing and on key financial ratios. We observe that the prevalence of the arbitrageur counteracts the effects of unsophisticated investors, resulting in a lower volatility of the price–dividend ratio, lower predictive power of changes in consumption for future price changes and lower equity premium. Thus, the results of our research allow us to conjecture that the extrapolation bias in the prices is lowered.Conference Object Assessing Health Care Resource Utilization and Costs Among Us Veterans Diagnosed With Asthma(2016) Ogbomo, A; Tan, H; Kariburyo, F; Xie, L; Başer, Onur...Conference Object Assessing the Economic Burden and Health Care Utilization of Attention Deficit/Hyperactivity Disorder Among Us Medicaid Patients(2016) Zhang Q; Zhao, Y; Keshishian, A; Xie, L; Yuce, H; Başer, Onur...Conference Object Assessing the Economic Burden of Rheumatoid Arthritis Patients With Different Clinical Disease Activity Index Scores: a Probabilistic Matching Study(2016) Kariburyo, F; Du, J; Xie, L; Başer, OnurTo evaluate the health care resource utilization and economic burdenof rheumatoid arthritis (RA) based on the Clinical Disease Activity Index(CDAI). Adult patients diagnosed with RA (International Classificationof Diseases, Ninth Revision, Clinical Modification code 714.xx) were identified froma large claims database and a RA registry from 2006-2015. Patients identified wereprobabilistically matched with a 1:1 ratio based on age, gender, state, and indexyear. The first RA diagnosis date was designated as the index date. Patients wererequired to have continuous health plan enrollment with medical and pharmacybenefits for 12 months post-index date (follow-up period). Patients were classifiedas having high (> 22), moderate (> 10 to ≤ 22), or low disease activity (> 2.8 to ≤ 10),or in remission (0 to ≤ 2.8) based on CDAI scores. All-cause and RA-related healthcare costs and utilization during the follow-up period were assessed. A total of 3,749 matched RA patients were identified, and 24.11%, 31.93%, and26.91% had high, moderate, and low disease activity, respectively, and 17.04% werein remission. RA patients were, on average, age 57 years, 76% were female, andmost resided in Washington (77%), with average all-cause total costs of $27,008and RA-related costs of $5,262 during the 12-month follow-up period. The averagenumber of office visits was higher for patients with high disease activity (12.31),followed by 11.79, 11.71, and 11.59 for patients with moderate disease activity, lowdisease activity, and for those in remission. Primary cost drivers were outpatientand pharmacy costs, resulting in total all-cause costs of $28,054, $27,285, $26,633,and $25,600, and total RA-related costs of $5,511, $5,280, $4,893, and $5,461 forpatients with high, moderate, and low disease activity, and for those in remission,respectively. RA patients with high disease activity, measured byCDAI score, have a substantial economic burden.Conference Object Conference Object Comparative Persistence With Antihyperglycemic Agents (aha) Used To Treat Type 2 Diabetes Mellitus (t2dm) in the Real World(2016) Cai, J; Wang, Y; Başer, Onur; Xie, L; Diels, J; Neslusan, C; Chow, W....Conference Object Comparing Costs and Resource Utilization Between Patients With Schizophrenia Treated With Paliperidone Palmitate or Oral Atypical Antipsychotics in California Medicaid (medi-Cal)(2015) Pesa, J; Wang, L; Yuce, H; Başer, Onur...Conference Object Comparing Health Care Resource Utilization and Costs Among Obese Patients in the Us Medicaid Population(2016) Zhang, Q; Zhao, Y; Keshishian, A; Xie, L; Yuce H.; Başer, OnurObjectives : To evaluate health care resource utilization and costs among obese patients in the U.S. Medicaid population.Conference Object Comparison of All-Cause Mortality Rate and Economic Burden Between Newly Diagnosed Alzheimer’s Disease Patients Who Received Anti-Dementia Treatment Versus Not: a Longitudinal Retrospective Study(2016) Black, CM; Hu, X; Khandker RK; Ambegaonkar, BM; Kariburyo, M. Furaha; Xie, L; Başer, Onur; Yuce, H....Conference Object Comparison of Major-Bleeding Risk and Health Care Costs Among Treatment-Naïve Non-Valvular Atrial Fibrillation Patients Initiating Apixaban, Dabigatran, Rivaroxaban, or Warfarin(2015) Amin, Alpesh; Keshishian, A; Xie, L; Başer, Onur; Price, K; Vo, L; Singh, P; Bruno, A; Mardekian, J; Tan, W; Singhal, S; Patel, C; Odell, K; Trocio J....Conference Object Comparison of Short Term Bleeding-Related Health Care Utilization and Costs Among Treatment-Naïve Non-Valvular Atrial Fibrillation Patients Initiating Apixaban, Dabigatran, Rivoxaban or Warfarin(2015) Keshishian, A; Xie, L; Başer, Onur; Price, K; Vo, L; Singh, P; Bruno, A; Mardekian, J; Tan, W; Singha, S; Patel C; Odell, K; Trocio J....Article Citation - WoS: 15Citation - Scopus: 18Consumer Confidence and Economic Activity: a Factor Augmented Var Approach(Taylor & Francis, 2016) Kılıç, Erdem; Çankaya, SerkanThis study aims to analyse the effects of the consumer confidence on economic activity for the USmarket. We use the empirical factor-augmented vector autoregression (FAVAR) method, whichenables us to incorporate a wide range of economic activity factors into the analysis. Theconsumer confidence index (CCI) is chosen as the principal variable that is presumed to representthe degree of optimism on the state of economic activity. The results show that consumerconfidence and economic activity are strongly correlated for manufacturing-related factors,such as industrial production and inventories. We also observe strong relation among CCI andpersonal consumption expenditures, as well as housing market variables.Conference Object Contagion Effects in Forward and Spot Foreign Exchange Markets(2017) Kılıç, ErdemContagion effects in the Forex Markets are estimated by the help of a bivariate Hawkes diffusion model. Contagion occurs in most cases beyond volatility. n this regard, asymmetry in these expectations is involved. The asymmetry depends on each currency pair. Internal market dynamics, as well as the transmission of country-specific dynamics are important features in determining the exact impact of the asymmetry on the evolution of these parameters.Article Citation - WoS: 9Citation - Scopus: 10Contagion Effects of U.s. Dollar and Chinese Yuan in Forward and Spot Foreign Exchange Markets(Elsevier, 2017) Kılıç, ErdemFinancial contagion in forex markets is modeled by the application of a bivariate Hawkes stochastic jumpprocess. The self-exciting and mutually exciting properties of the jump-clustering model allow for illustratinginternal and cross-sectional transmission processes. The results obtained suggest stronger effects from US tomutual markets than in the reverse case. Cross-sectional excitation dynamics in the spot markets are larger thanin the forward markets. As a central result, we can observe that the results for the Hawkes-model parameters aremore significant in the forward markets. Transmission dynamics beyond volatility determine the likelihood ofcontagion occurrence. The significance of the decay parameters towards the long term jump intensities supportsthe importance of abrupt fluctuations in the contagion discourse.Article Creating National Weights for a Patient-Level Longitudinal Database(2016) Başer, Onur; Li Wang; Maguire J.To create a nationally-representative estimate from longitudinal data by controlling for sociodemographic factors and health status. The Agency for Healthcare Research and Quality’s (AHRQ) Medicare Expenditures Panel Survey (MEPS) was used as the basis for adjustment methodology. MEPS is a data source representing health insurance coverage cost and utilization, and comprises several large-scale surveys of families, individuals, employers, and health care providers. Using these data, we created subset populations. We then used multivariate logistic regression to construct demographics and case-mix-based weights, which were applied to create a population sample that is similar to the national population. The weight was derived using the inverse probability of the weighting approach, as well as a raking mechanism. We compared the results with the projected number of persons in the US population in the same categories to examine the validity of the weights. The following variables were used in the logistic regression: Age group, gender, race, location, income level and health status (Charlson Comorbidity Index scores and chronic condition diagnosis). Relative to MEPS data, patients included in the private insurance data were more likely to be male, older, to have a chronic condition, and to be white (p=0.0000). Adjusted weighted values for patients in the commercial group ranged from 15.47 to 36.36 (median: 16.91). Commercial insurance and MEPS data populations were similar in terms of their socioeconomic and clinical categories. As an outcomes measure, the predicted annual number of patients with prescription claims from private insurance data was 6 963 034. The annual number of statin users were predicted as 6 709 438 using weighted MEPS data. National projections of large-scale patient longitudinal databases require adjustment utilizing demographic factors and case-mix differences related to health status.Conference Object Demographic and Clinical Characteristics of Patients With Polycythemia Vera (pv) in the Us Veterans Population(2016) Parasuraman S; Yu J; Paranagama D; Shrestha S; Wang L,; Başer, Onur...Conference Object Demographic and Socioeconomic Characteristics That Impact Selection of Oral Anticoagulants Among Non-Valvular Atrial Fibrillation Patients(2016) Keshishian, A; Du, J; Xie, L; Yuce H.; Başer, Onur...
