Investigating the Serum Level of Vitamin D and its Relationship with the Outcome of the Disease in Patients with COVID-19 Infection

Background Various studies have reported that the normal level of vitamin D is related to the improvement of the prognosis of patients. Therefore, the level of vitamin D should be checked in hospitalized patients and in cases of vitamin D deficiency. Aim This study was conducted to investigate the serum level of vitamin D and its relationship with the outcome of the disease in hospitalized patients with COVID-19. Methods This is a cross-sectional study (descriptive-analytical) that examined 100 patients with COVID-19. After obtaining permission from Jiroft University of Medical Sciences, the desired data was collected using a researcher-made checklist. The data of the study was collected by the researcher visiting the inpatient wards of the COVID-19 patients. Data were analyzed using SPSS-v-22 software. Results The average age of the patients was 54.3 ± 24.7 years (age range 3 to 96 years), of which 53 were women and 47 were men. Only 53% of the examined patients were hospitalized, and the rest were included in the study as outpatients. The level of vitamin D in hospitalized people was significantly lower than in outpatients, the serum level of vitamin D in deceased people was lower than in other groups, and a significant relationship was found between age and vitamin D levels in people with COVID-19. Conclusion The results demonstrated that the frequency of vitamin D deficiency was higher in patients with COVID-19. There was a significant relationship between the average serum level of vitamin D and the severity of COVID-19 disease.