Clinical Science of Nutrition
Original Article

Does the Level of Vitamin D in COVID-19 Patients Affect the Survival and Duration of Hospital Stay?


Nutrition and Dietetics, Yüksek İhtisas University, Faculty of Health Sciences, Ankara, Turkey


Department of Clinical Nutrition Units, Ankara City Hospital, Ankara, Turkey


Department of Anesthesiology and Reanimation, Ankara Yıldırım Beyazıt University, Faculty of Medicine, Ankara, Turkey

Clin Sci Nutr 2023; 5: 41-49
DOI: 10.5152/ClinSciNutr.2023.22059
Read: 163 Downloads: 96 Published: 01 August 2023

Objective: This study aimed to evaluate the effect of categorized and normal vitamin D levels on hospital stay and mortality in adult patients with COVID-19.

Methods: One hundred sixty-eight hospitalized patients due to coronavirus disease 2019 were retrospectively evaluated. The study data were collected from medical records (age, gender, comorbidity, vitamin D level, duration of hospital stay, mortality/ survival status). Serum 25(OH) vitamin D level ≥ 30 ng/mL is defined as normal, 20-29 ng/mL is an insufficiency level, and less than 20 ng/mL is defined as a deficiency level.

Results: The mean vitamin D level of 168 patients was 18.72 ± 11.18 ng/mL, and 79.4% of patients with vitamin D deficiency had comorbidity. When vitamin D levels were categorized, there was no difference between the groups regarding hospital stay and survival (P > .05). However, when the mean vitamin D levels between the deceased and surviving patients were assessed, vitamin D levels were significantly higher in the survivors (P=.019). Vitamin D significantly affected survival compared to the univariate model (P=.044), while there was no significant effect on the multivariate model (P > .05). Even when the factors affecting the vitamin D level were adjusted, no significant results were found.

Conclusion: Among hospitalized COVID-19 patients, vitamin D levels did not support an association between the duration of hospital stay and mortality.

Cite this article as: Çetin Özbek S, Özsoy S, Öztürk L. Does the level of vitamin D in COVID-19 patients affect the survival and duration of hospital stay? Clin Sci Nutr. 2023;5(2):41-49.

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