Laboratory tests
Sample collection and processing for hematological parameters was carried out in EDTA-Ke tubes for the hemogram and according to the criteria of the attending physician also in a tube with citrate as an anticoagulant. The samples were immediately sent to the rapid response laboratory of the participating centers where they were processed following the protocol of each center. Anemia was defined according to the WHO criteria, with Hb values <13g/dL for men and <12g/dL for women24.
The patients were divided into two gropus based on whether they had or did not have anemia using the previously mentioned criteria, with the results of the Hb values of the analyses carried out during care in the HED.