Figure 2.

Serial follow-up of vitamin D levels in Group 2. Serial blood samples were obtained from patients in group 2 on day 7, 14, 21, and 28. If the patients died or were discharged from ICUs, further blood samples were not obtained. If the patients received high-dose vitamin D therapy, the subsequent vitamin D level of these patients were excluded One patient received high-dose vitamin D (560,000 IU) therapy within Day 7, and the vitamin D levels of this patient on day 1 and 7 was 12.4 and 78.6 ng/ml, respectively. This patient was discharger before day 14. Another patient received high-dose vitamin D (560,000 IU) therapy between Day 7 and 14, and the vitamin D levels of this patient on day 1, 7, 14, 21, and 28 were 13.1, 18.8, 92, 68.2, and 64.6 ng/ml, respectively.