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. 2021 Jul 17;45(1):167–179. doi: 10.1007/s40618-021-01639-9

Table 7.

COVID-19 outcomes in 25OHD-suficient, calcifediol-supplemented patients compared to unsupplemented, 25OHD-suficient patients

Calcifediol treated and serum 25OHD ≥ 30 ng/ml (n = 16,276) Untreated controls with serum 25OHD < 20 ng/ml (n = 7616) Univariate analysis3 Multivariate analysis4
HR (CI 95%) p HR (CI 95%) p
SARS-CoV2 infection1, n (%) 535 (3.3%) 430 (5.6%) 0.58 (0.51–0.66)  < 0.001 0.69 (0.61–0.79)  < 0.001
Severe COVID-192, n (%) 100 (0.6%) 99 (1.3%) 0.47 (0.36–0.62)  < 0.001 0.61 (0.46–0.81) 0.001
COVID-19 mortality, n (%) 88 (0.5%) 96 (1.3%) 0.43 (0.32–0.57)  < 0.001 0.56 (0.42–0.76)  < 0.001

25OHD 25-hydroxyvitamin D

1Positive PCR or clinical diagnosis of SARS-CoV2 infection

2Composite outcome of need for non-invasive mechanical ventilation, orotracheal intubation, mechanical ventilation, intensive care unit admission or death

3Unadjusted Cox regression analysis

4Cox regression analysis controlling for all covariates