Başer, Onur

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Profile URL
https://hdl.handle.net/20.500.11779/2820
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Email Address
basero@mef.edu.tr
Main Affiliation
04. Faculty of Economics, Administrative and Social Sciences
Status
Former Staff
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ORCID ID
0000-0001-7447-5672
Scopus Author ID
Turkish CoHE Profile ID
Google Scholar ID
WoS Researcher ID
JUE-8293-2023

Sustainable Development Goals

1

NO POVERTY
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3

GOOD HEALTH AND WELL-BEING
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44

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8

DECENT WORK AND ECONOMIC GROWTH
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9

INDUSTRY, INNOVATION AND INFRASTRUCTURE
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10

REDUCED INEQUALITIES
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6

CLEAN WATER AND SANITATION
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5

GENDER EQUALITY
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17

PARTNERSHIPS FOR THE GOALS
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2

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11

SUSTAINABLE CITIES AND COMMUNITIES
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2

ZERO HUNGER
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16

PEACE, JUSTICE AND STRONG INSTITUTIONS
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1

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12

RESPONSIBLE CONSUMPTION AND PRODUCTION
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14

LIFE BELOW WATER
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15

LIFE ON LAND
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QUALITY EDUCATION
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CLIMATE ACTION
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AFFORDABLE AND CLEAN ENERGY
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Scholarly Output

98

Articles

27

Views / Downloads

17976/94477

Supervised MSc Theses

0

Supervised PhD Theses

0

WoS Citation Count

399

Scopus Citation Count

440

WoS h-index

13

Scopus h-index

13

Patents

0

Projects

0

WoS Citations per Publication

4.07

Scopus Citations per Publication

4.49

Open Access Source

22

Supervised Theses

0

JournalCount
Value in Health32
International Society for Pharmacoeconomics and Outcomes Research (ISPOR) 21st Annual International Meeting.18
International Society of Pharmacoeconomics and Outcomes Research (ISPOR) 18th Annual European Congress5
International Society for Pharmacoeconomics and Outcomes Research (ISPOR) 21st Annual International Meeting4
American Heart Association (AHA) Scientific Sessions 20152
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Now showing 1 - 10 of 98
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    Evaluating the Economic Burden and Health Care Utilization of Coronary Artery Disease in the Us Medi-Cal Population
    (2016) Zhang, Q; Zhao, Y; Keshishian, A; Xie, L; Yuce, H; Başer, Onur
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    Spatial Distribution of the Total Number of Medical Devices in Turkey: a Classification Analysis
    (Elsevier Science Inc, 2016) Cinaroğlu, S.; Başer, Onur
    Objectives: The unbalanced distribution of medical technologies and devices between rural and urban areas is a major problem for developing countries including Turkey. After the establishment of Public Hospital Unions (PHUs) in Turkey, legislative changes were made to improve the autonomy of public hospitals. This study utilizes spatial analysis to assess the distribution of medical device use in Turkey using PHUs as a decision making unit. Methods: Data from the PHUs’ statistics year book for the year 2014 was assessed. The total number of PHUs is 89. A Hierarchical cluster analysis was performed to classify PHUs according to the total number of medical devices. The Euclidean distance measure and Wards methods were used in the analysis for classification. Results: Study results show that, in Turkey, PHUs were categorized into two clusters based on the total number of medical devices available. Regarding the spatial distribution of the clusters, the first cluster represents PHUs in rural areas, and the second represents PHUs located in urban areas of Turkey. PHUs representing large cities with high population density were included in one cluster, and all other PHUs were included in the second. Statistical test results indicated that the two clusters differ according to the total number of magnetic resonance imaging (MRI: t= -14.10, p< 0.01), computed tomography (CT) scan (t= -15.75, p< 0.01), mammography (t= -11.40, p< 0.01), ultrasonography (t= -14.62, p< 0.01), and electrocardiography (EKG; t= -12.29, p< 0.01) equipment available. Conclusions: It is advisable for health policy makers and health technology assessment authorities in Turkey to focus on the differences between rural and urban areas of the country when determining the need for medical devices.
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    Trends in Prevalence and Incidence Rates of Type 2 Diabetes Mellitus in the Medicare Population
    (2015) Xie, L; Wang, Y; Tan, H; Ogbomo, A; Başer, Onur; Yuce H.
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    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
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    Article
    Citation - WoS: 15
    Citation - Scopus: 15
    Economic Outcomes in Patients With Chemotherapy-Naive Metastatic Castration-Resistant Prostate Cancer Treated With Enzalutamide or Abiraterone Acetate Plus Prednisone
    (Springer, 2020) Lechpammer, Stanislav; Ramaswamy, Krishnan; Wang, Li; Mardekian, Jack; George, Daniel J.; Sandin, Rickard; Schultz, Neil M.; Başer, Onur; Huang, Ahong
    Introduction: Prostate cancer (PC) is the second leading cause of cancer death among US men and accounts for considerable healthcare expenditures. We evaluated economic outcomes in men with chemotherapy-naı¨ve metastatic castration-resistant PC (mCRPC) treated with enzalutamide or abiraterone acetate plus prednisone (abiraterone). Methods: We performed a retrospective analysis on 3174 men (18 years or older) utilizing the Veterans Health Administration (VHA) database from 1 April 2014 to 31 March 2018. Men with mCRPC were included if they had at least one pharmacy claim for enzalutamide or abiraterone (first claim date = index date) following surgical or medical castration, had no chemotherapy treatment within 12 months prior to the index date, and had continuous VHA enrollment for at least 12 months pre- and post-index date. Men were followed until death, disenrollment, or end of study and were 1:1 propensity score matched (PSM). All-cause and PC-related resource use and costs per patient per month (PPPM) in the 12 months post index were compared between matched cohorts. Results: We identified 1229 men with mCRPC prescribed enzalutamide and 1945 prescribed abiraterone with mean ages of 74 and 73 years, respectively. After PSM, each cohort had 1160 patients. The enzalutamide cohort had fewer all-cause (2.51 vs 2.86; p\0.0001) and PC-related outpatient visits (0.86 vs 1.03; p\0.0001), with corresponding lower all-cause ($2588 vs $3115; p\0.0001) and PC-related ($1356 vs $1775; p\0.0001) PPPM outpatient costs compared with the abiraterone cohort. Allcause total costs (medical and pharmacy) PPPM ($8085 vs $9092; p = 0.0002) and PC-related total costs PPPM ($6321 vs $7280; p\0.0001) were significantly lower in the enzalutamide cohort compared with the abiraterone cohort. Conclusions: Enzalutamide-treated men with chemotherapy-naı ¨ve mCRPC had significantly lower resource utilization and healthcare costs compared with abiraterone-treated men. Plain Language Summary: Plain language summary available for this article.
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    Examining the Incidence and Prevalence of Alcohol Dependence Among Us Veteran Patients
    (2016) Bashyal, R; Du, H; Wang, L; Başer, Onur
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    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.