Ertuğrul Çolak profile image
Ertuğrul Çolak Prof. Dr. ESKİŞEHİR OSMANGAZİ ÜNİVERSİTESİ, TIP FAKÜLTESİ, TEMEL TIP BİLİMLERİ BÖLÜMÜ
Publication 18 Review 6 CrossRef Cited 7 TR Dizin Cited 7
18 Publication
6 Review
7 CrossRef Cited
7 TR Dizin Cited
0000-0003-3251-1043

Research Fields

Biostatistics

Institution

ESKİŞEHİR OSMANGAZİ ÜNİVERSİTESİ, TIP FAKÜLTESİ, TEMEL TIP BİLİMLERİ BÖLÜMÜ

Publications

The Effect of Different Effect Size Assumptions on Sample Size and Power: An R-Based Approach for Clinical Research
Authors: Muzaffer Bilgin , Ertuğrul Çolak
Published: 2026 , Eskisehir Medical Journal
DOI: -
FAVORITE 0 TOTAL DOWNLOAD COUNT 77

0

77

The Effect of Class-Imbalance Correction Strategies on Discrimination and Calibration in Electronic Health Records: A Comparative Simulation Study of Regularized Logistic Regression and Gradient Boosting
Authors: Muzaffer Bilgin , Ertuğrul Çolak
Published: 2026 , Osmangazi Tıp Dergisi
DOI: 10.20515/otd.1990468
FAVORITE 0 TOTAL DOWNLOAD COUNT 54

0

54

Immunogenetic Echoes of Demographic Change: A Quarter-Century Temporal Analysis of HLA Evolution at a Single Turkish Centre
Authors: Emel Yantır , Ertuğrul Çolak
Published: 2025 , Journal of Advanced Research in Health Sciences
DOI: 10.26650/JARHS2025-1755402
FAVORITE 0 TOTAL DOWNLOAD COUNT 344

0

344

Analysis of the YouTube Videos About Children with Cerebral Palsy: a research article
Authors: Öznur Fidan , Merve Çakırlı , Semiha Dertli , Ertuğrul Çolak
Published: 2024 , Turkish Journal of Science and Health
DOI: 10.51972/tfsd.1282929
FAVORITE 0 TOTAL DOWNLOAD COUNT 675

0

675

Mushroom Poisonings in Turkey: A Meta-Analysis Study
Authors: İlhami Ünlüoğlu , Elif Fatma Özkan Pehlivanoğlu , Hüseyin Balcıoğlu , Ertugrul Colak
Published: 2023 , Konuralp Medical Journal
DOI: 10.18521/ktd.1150910
FAVORITE 0 TOTAL DOWNLOAD COUNT 1039

0

1039

Investigation of Quality and Information Content of YouTube™ Videos on Physical Activity in the Elderly
Authors: Öznur Fidan , Fuat Yüksel , Ertuğrul Çolak , Deran Oskay
Published: 2023 , Adnan Menderes Üniversitesi Sağlık Bilimleri Fakültesi Dergisi
DOI: 10.46237/amusbfd.1200969
FAVORITE 0 TOTAL DOWNLOAD COUNT 1684

0

1684

Classification of Oecd Countries in Terms of Medical Resources and Usage with Hierarchical Clustering Analysis
Authors: Gökçe Dağtekin , Ali Kılınç , Ertugrul Colak , Alaettin Ünsal , Didem Arslantas
Published: 2022 , Osmangazi Tıp Dergisi
DOI: 10.20515/otd.978341
FAVORITE 0 TOTAL DOWNLOAD COUNT 872

0

872

Evaluation of Clinical and Laboratory Characteristics of Our Patients with Hodgkin Lymphoma: A Single Center Experience
Authors: Sevil Nalbant Avcı , Hava Üsküdar Teke , Neslihan Andıc , Nur Oguz Davutoglu , Eren Gunduz , Ertugrul Colak
Published: 2021 , Osmangazi Tıp Dergisi
DOI: 10.20515/otd.932876
FAVORITE 0 TOTAL DOWNLOAD COUNT 1003

0

1003

How do the effective therapeutics for hepatocellular carcinoma treatment change PIWI Interacting RNA expressions?
Authors: Çağrı Öner , Necdet Altıner, Ertugrul Colak
Published: 2020 , Acta Medica Alanya
DOI: 10.30565/medalanya.755050
FAVORITE 0 TOTAL DOWNLOAD COUNT 993

0

993

Comparison of Combining Methods for Multiple Continuous Diagnostic Tests Using ROC Curve Analysis
Authors: Muzaffer Bilgin , Aşkın Doğan , Ertugrul Colak
Published: 2020 , Osmangazi Tıp Dergisi
DOI: 10.20515/otd.673372
FAVORITE 0 TOTAL DOWNLOAD COUNT 2045

0

2045

Our Midterm Outcomes of Strabismus Surgery in Vertical Deviations
Authors: Haluk Hüseyin Gürsoy , Ayse İdil Cakmak, Onur Ozalp, Omur Can Ozdemir, Ertugrul Colak
Published: 2020 , Osmangazi Tıp Dergisi
DOI: 10.20515/otd.528287
FAVORITE 0 TOTAL DOWNLOAD COUNT 1560

0

1560

The Effect of Vitamin D on Hepatocellular Carcinoma
Authors: Çağrı Öner , Hatice İsan, Ranan Gülhan Aktaş, Ertuğrul Çolak
Published: 2020 , Osmangazi Tıp Dergisi
DOI: 10.20515/otd.584749
FAVORITE 0 TOTAL DOWNLOAD COUNT 1490

0

1490

On the Performance of Estimators in Standard Tobit Model under Different Optimization Techniques and Sample Sizes: A Simulation Study
Authors: Büşra Emir , Ertuğrul Çolak , Kevser Setenay Öner
Published: 2018 , Osmangazi Tıp Dergisi
DOI: 10.20515/otd.409064
FAVORITE 0 TOTAL DOWNLOAD COUNT 2241

0

2241

Comparison of Unconditional Asymptotic, Exact Conditional and Robust Logistic Regression Methods for Binary Contaminated Data Sets: A Simulation Study
Authors: Muzaffer Bilgin , Ertugrul Colak
Published: 2018 , Osmangazi Tıp Dergisi
DOI: 10.20515/otd.409043
FAVORITE 0 TOTAL DOWNLOAD COUNT 1555

0

1555

Refractive Errors and Optical Biometry Parameters Associated with Tilted Disc Syndrome
Authors: Dilruba Koseoglu, Huseyin Gursoy , Muzaffer Bilgin , Ertugrul Colak
Published: 2018 , Osmangazi Tıp Dergisi
DOI: 10.20515/otd.347932
FAVORITE 0 TOTAL DOWNLOAD COUNT 2089

0

2089

KNOWLEDGE AND USAGE RATE OF COMPLEMENTARY AND ALTERNATIVE MEDICINE IN SCHOOL OF HEALTH SCIENCE STUDENTS
Authors: Ayfer Açıkgöz , Yeliz Kaya , Ayşe Özkaraman, Güler Balcı Alparslan , Burcu Babadağ , Ertuğrul Çolak
Published: 2016 ,
DOI: -
FAVORITE 0 TOTAL DOWNLOAD COUNT 1447

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1447

DNA Metiltransferaz-3b ve Metil Bağlayan Bölge Proteini-1’i Hedefleyen Mirna Gen Polimorfizmlerinin Akciğer Kanseri İle İlişkisinin Belirlenmesi
Authors: Cansu Ozbayer , İrfan Degırmencı, Derya Ustuner, Guntulu Ak, Faruk Saydam, Ertugrul Colak , Hasan Gunes, Muzaffer Metıntas
Published: 2015 , Osmangazi Tıp Dergisi
DOI: -
FAVORITE 0 TOTAL DOWNLOAD COUNT 2659

0

2659

DIFFERENT APPROACHES FOR BREAST CANCER: VOLTAGE GATED POTASSIUM CHANNELS AND MICRORNAS
Authors: Çağrı Öner, Ertuğrul Çolak , Didem Turgut Coşan
Published: 2015 , Communications Faculty of Sciences University of Ankara Series C Biology
DOI: 10.1501/commuc_0000000181
FAVORITE 0 TOTAL DOWNLOAD COUNT 681

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681

Articles published in
Acta Medica Alanya
Acta Medica Alanya
Adnan Menderes Üniversitesi Sağlık Bilimleri Fakültesi Dergisi
Adnan Menderes Üniversitesi Sağlık Bilimleri Fakültesi Dergisi
Eskisehir Medical Journal
Eskisehir Medical Journal
Journal of Advanced Research in Health Sciences
Journal of Advanced Research in Health Sciences
Konuralp Medical Journal
Konuralp Medical Journal
Osmangazi Tıp Dergisi
Osmangazi Tıp Dergisi
Turkish Journal of Science and Health
Turkish Journal of Science and Health
Communications Faculty of Sciences University of Ankara Series C Biology
Communications Faculty of Sciences University of Ankara Series C Biology
Editorship
Journal of Pediatric Sciences
Journal of Pediatric Sciences
Editor
Osmangazi Tıp Dergisi
Osmangazi Tıp Dergisi
Section Editor , Statistics Editor
Editorial Board Memberships
Journal of Pediatric Sciences
Journal of Pediatric Sciences
Osmangazi Tıp Dergisi
Osmangazi Tıp Dergisi

Reviews

Health Academy Kastamonu
Health Academy Kastamonu
Osmangazi Tıp Dergisi
Osmangazi Tıp Dergisi

Publications

Investigation of Quality and Information Content of YouTube™ Videos on Physical Activity in the Elderly
Authors: Öznur Fidan , Fuat Yüksel , Ertuğrul Çolak , Deran Oskay
Published: 2023 , Adnan Menderes Üniversitesi Sağlık Bilimleri Fakültesi Dergisi
DOI: 10.46237/amusbfd.1200969
CITED 2 FAVORITE 0 TOTAL DOWNLOAD COUNT 1684

2

0

1684

Classification of Oecd Countries in Terms of Medical Resources and Usage with Hierarchical Clustering Analysis
Authors: Gökçe Dağtekin , Ali Kılınç , Ertugrul Colak , Alaettin Ünsal , Didem Arslantas
Published: 2022 , Osmangazi Tıp Dergisi
DOI: 10.20515/otd.978341
CITED 1 FAVORITE 0 TOTAL DOWNLOAD COUNT 872

1

0

872

Comparison of Combining Methods for Multiple Continuous Diagnostic Tests Using ROC Curve Analysis
Authors: Muzaffer Bilgin , Aşkın Doğan , Ertugrul Colak
Published: 2020 , Osmangazi Tıp Dergisi
DOI: 10.20515/otd.673372
CITED 2 FAVORITE 0 TOTAL DOWNLOAD COUNT 2045

2

0

2045

The Effect of Vitamin D on Hepatocellular Carcinoma
Authors: Çağrı Öner , Hatice İsan, Ranan Gülhan Aktaş, Ertuğrul Çolak
Published: 2020 , Osmangazi Tıp Dergisi
DOI: 10.20515/otd.584749
CITED 2 FAVORITE 0 TOTAL DOWNLOAD COUNT 1490

2

0

1490

Popular Publications: It is determined automatically by the researchers doing research in DergiPark according to the statistics of being added to the favorites. CrossRef Cited: The citations shown in DergiPark are drawn from CrossRef. For this, the cited and cited articles must be registered in CrossRef (DOI number). ^: Citation numbers are reflected in the system by DergiPark at certain periods.