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Blood-Type-A is a COVID-19 infection and hospitalization risk in a Turkish cohort

Cetin, Meryem; Cetin, Sirin; Ulgen, Ayse; Li, Wentian (Elsevier France-Editions Scientifiques Medicales Elsevier, 2023)

We have shown in an ethnically homogenous Turkey cohort with more than six thousand cases and 25 thousand controls that ABO blood types that contain anti-A antibody (O and B) are protective against COVID-19 infection and ...

Approximate reciprocal relationship between two cause-specific hazard ratios in COVID-19 data with mutually exclusive events

Li, Wentian; Cetin, Sirin; Ulgen, Ayse; Cetin, Meryem; Sivgin, Hakan; Yang, Yaning (Walter De Gruyter Gmbh, 2023)

COVID-19 survival data presents a special situation where not only the time-to-event period is short, but also the two events or outcome types, death and release from hospital, are mutually exclusive, leading to two ...

A composite ranking of risk factors for COVID-19 time-to-event data from a Turkish cohort

Ulgen, Ayse; Cetin, Sirin; Cetin, Meryem; Sivgin, Hakan; Li, Wentian (Elsevier Sci Ltd, 2022)

Having a complete and reliable list of risk factors from routine laboratory blood test for COVID-19 disease severity and mortality is important for patient care and hospital management. It is common to use meta-analysis ...

Alpha variant (B.1.1.7) of SARS-CoV-2 increases fatality-rate for patients under age of 70 years and hospitalization risk overall

Cetin, Meryem; Balci, Pervin Ozlem; Sivgin, Hakan; Cetin, Sirin; Ulgen, Ayse; Demir, Hatice Dortok; Li, Wentian (Akademiai Kiado Zrt, 2021)

The emergence of new SARS-CoV-2 variants is a challenge to the control of this pandemic. It is therefore important to collect and to analyze data related to the infection caused by different variants. We have obtained more ...