I work with statistical and bioinformatic analyses, genetic epidemiology, and have experience in register-based epidemiology. I primarily use R, but I also have experience with Python and Stata.

I have a background as a nuclear engineer from Turkey and completed both my master’s degree and Ph.D. in mechanical engineering, specializing in simulations of heat transfer as well as fluid mechanics and dynamics. During this period, I mainly worked with programming in Fortran and Matlab.

Later, I worked as a postdoctoral researcher and scientist at the Department of Clinical Science, where I conducted research on diabetic complications using genetic data and RNA sequencing data.

I am a co-lecturer for RMED901a course

2025

• Thomassen, Marte Renate; Hollund, Bjørg Eli; Özgümüs, Türküler et al. (2025). Occupational exposure to bioaerosols in the Norwegian salmon processing industry. (external link)

2024

• Iversen, Arild; Blomberg, Bjørn; Haug, Kjell et al. (2024). Symptom trajectories of post-COVID sequelae in patients with acute Delta or Omicron infection in Bergen, Norway. (external link)

2023

• Onyango, Therese Bredholt; Zhou, Fan; Bredholt, Geir et al. (2023). SARS-CoV-2 specific immune responses in overweight and obese COVID-19 patients. (external link)
• Ertesvåg, Nina Urke; Iversen, Arild; Blomberg, Bjørn et al. (2023). Post COVID-19 condition after delta infection and omicron reinfection in children and adolescents. (external link)
• Hetlevik, Øystein; Wensaas, Knut-Arne; Baste, Valborg et al. (2023). Prevalence and predictors of post-COVID-19 symptoms in general practice - a registry-based nationwide study. (external link)

2022

• Fedotkina, Olena; Jain, Ruchi; Prasad, Rashmi B. et al. (2022). Neuronal Dysfunction Is Linked to the Famine-Associated Risk of Proliferative Retinopathy in Patients With Type 2 Diabetes. (external link)
• Fjelltveit, Elisabeth Berg; Blomberg, Bjørn; Kuwelker, Kanika et al. (2022). Symptom Burden and Immune Dynamics 6 to 18 Months Following Mild Severe Acute Respiratory Syndrome Coronavirus 2 Infection (SARS-CoV-2): A Case-control Study. (external link)

2021

• Fedotkina, Olena; Luk, Andrea O.Y.; Jain, Ruchi et al. (2021). Perinatal famine is associated with excess risk of proliferative retinopathy in patients with type 2 diabetes. (external link)
• Fedotkina, Olena; Sulaieva, Oksana; Özgümüs, Türküler et al. (2021). Novel Reclassification of Adult Diabetes Is Useful to Distinguish Stages of β-Cell Function Linked to the Risk of Vascular Complications: The DOLCE Study From Northern Ukraine. (external link)
• Özgümüs, Türküler; Sulaieva, Oksana; Jessen, Leon E. et al. (2021). Reduced expression of OXPHOS and DNA damage genes is linked to protection from microvascular complications in long-term type 1 diabetes: the PROLONG study. (external link)

See a complete overview of publications in Cristin.

See my page at Google scholar