Key clinical point: The hemoglobin value was significantly lower in severe COVID-19 patients, compared with those with milder forms.
Major finding: A weighted mean difference in hemoglobin content of −7.1 g/L (95% CI, −8.3 g/L to −5.9 g/L) was found in comparing severe to milder cases of COVID-19.
Study details: Meta-analysis of four studies of 1,210 COVID-19 patients with assessable hemoglobin values.
Disclosures: The authors declared that they had no conflicts of interest.
Lippi G et al. Hematol Transfus Cell Ther. 2020 Apr 11; doi:10.1016/j.htct.2020.03.001.