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Article Publish Status: FREE
Abstract Title:

Impact of Serum 25(OH) Vitamin D Level on Mortality in Patients with COVID-19 in Turkey.

Abstract Source:

J Nutr Health Aging. 2021 ;25(2):189-196. PMID: 33491033

Abstract Author(s):

S Karahan, F Katkat

Article Affiliation:

S Karahan

Abstract:

BACKGROUND: Because of the lack of sufficient data, we aimed to investigate the role of serum 25(OH) vitamin D level on COVID severity and related mortality.

METHODS: This was a retrospective observational study. Data, including sociodemographic features, clinical characteristics, and laboratory data, and 25(OH) vitamin D levels were recorded for each study participant. Patients were stratified into different vitamin D groups; Normal (Serum 25(OH) vitamin D level>30 ng/mL), Vitamin D insufficiency (21-29 ng/mL), and deficiency (<20 ng/mL). The severity of COVID was classified according to the Chinese Clinical Guideline for classification of COVID-19 severity. Mortality data were determined for participants. Univariate and multivariate Logistic regression analysis was performed to determine independent predictors of in-hospital mortality.

RESULTS: Overall, 149 COVID-19 patients (females 45.6%, mean age 63.5± 15.3 (range 24-90 years) years) were included. Forty-seven patients (31.5%) had moderate COVID-19, whereas 102 patients (68.5%) had severe-critical COVID-19. The mean 25(OH) vitamin D level was 15.2 ± 10.3 ng/mL. Thirty-four (22.8%) and 103 (69.1%) patients had vitamin D insufficiency and deficiency, respectively. Mean serum 25(OH) vitamin D level was significantly lower in patients with severe-critical COVID-19 compared with moderate COVID-19 (10.1 ± 6.2 vs. 26.3 ± 8.4 ng/mL, respectively, p<0.001). Vitamin D insufficiency was present in 93.1% of the patients with severe-critical COVID-19. Multivariate logistic regression analysis revealed that only lymphocyte count, white blood cell count, serum albumin and, 25(OH) vitamin D level were independent predictors of mortality.

CONCLUSION: Serum 25(OH) vitamin D was independently associated with mortality in COVID-19 patients.

Study Type : Human Study

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Sayer Ji
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