Does vitamin D level have an effect on COVID-19 positivity and COVID-19 related mortality? A retrospective study Authors Olgun Goktas Department of Family Medicine, Uludag University Family Health Center, Bursa, Turkey https://orcid.org/0000-0003-3291-5187 Ilker Ercan Department of Biostatistics, Uludag University, Bursa, Turkey https://orcid.org/0000-0002-2382-290X Canan Ersoy Department of Internal Medicine, Uludag University, Bursa, Turkey https://orcid.org/0000-0003-4510-6282 Arda Uzunoglu Department of Biostatistics, Uludag University, Health Sciences Institute, Bursa, Turkey https://orcid.org/0000-0002-7224-8588 Fatma Ezgi Can Department of Biostatistics, Izmir Katip Celebi University, Izmir, Turkey https://orcid.org/0000-0002-1953-7735 DOI: https://doi.org/10.47391/JPMA.4593 Abstract Objective: To explore the possible relationship between vitamin D and coronavirus disease-2019 in an urban population known to have relatively low vitamin D levels. Method: The retrospective study was conducted in Bursa, Turkey, and comprised data of 30 family health centers from March 1 to December 15, 2020, related to diagnosed inpatients of coronovairus disease-2019. The diagnosis was based on polymerase chain reaction test for severe acute respiratory syndrome coronavirus-2 infection. Vitamin D levels of these patients were obtained from previous records and compared with those without polymerase chain reaction positivity. Vitamin D levels of positive patients who survived were compared with those who died of coronavirus disease-2019. Data was analysed using SPSS 21. Result: Of the 2,105 patients whose data was retrived, 212(10%) were positive for coronavirus disease-2019, while 1,893(90%) were negative. Among the positive patients, 89(42%) were men and 123(58%) were women. The overall median age was 45 years (Q1-Q3(Q1: first quartile, Q3: third quartile): 35-56 years). Vitamin D level was not significantly different between the positive and negative patients (p>0.05). Among the positive patients, 2(0.9%) patients did not have new admissions to the designated centers and their data was excluded, 206(97.2%) survived and 4(1.9%) died. There was no significant difference in vitamin D levels between those who survived and those who died (p>0.05). Conclusion: There was no significant relationship found between vitamin D levels and coronavirus disease-2019 infection and related deaths. Key Words: COVID-19, PCR positivity, SARS-CoV-2 infection, Vitamin D. Author Biographies Olgun Goktas, Department of Family Medicine, Uludag University Family Health Center, Bursa, Turkey Uludag University Family Health Center, Bursa, Turkey Ilker Ercan, Department of Biostatistics, Uludag University, Bursa, Turkey Bursa Uluda? University, Faculty of Medicine, Department of Biostatistics, Bursa, Turkey Canan Ersoy, Department of Internal Medicine, Uludag University, Bursa, Turkey Uluda? University Faculty of Medicine, Department of Internal Medicine, Division of Endocrinology and Metabolism, Bursa, Turkey Arda Uzunoglu, Department of Biostatistics, Uludag University, Health Sciences Institute, Bursa, Turkey Bursa Uluda? University, Health Sciences Institute, Department of Biostatistics, Bursa, Turkey Fatma Ezgi Can, Department of Biostatistics, Izmir Katip Celebi University, Izmir, Turkey ?zmir Katip Çelebi University, Faculty of Medicine, Department of Biostatistics, ?zmir, Turkey Downloads Full Text Article Published 2022-08-15 How to Cite Goktas, O., Ercan, I., Canan Ersoy, Arda Uzunoglu, & Fatma Ezgi Can. (2022). Does vitamin D level have an effect on COVID-19 positivity and COVID-19 related mortality? A retrospective study. Journal of the Pakistan Medical Association, 72(9), 1779–1782. https://doi.org/10.47391/JPMA.4593 More Citation Formats ACM ACS APA ABNT Chicago Harvard IEEE MLA Turabian Vancouver Download Citation Endnote/Zotero/Mendeley (RIS) BibTeX Issue Vol. 72 No. 9 (2022): SEPTEMBER Section RESEARCH ARTICLE