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. Author manuscript; available in PMC: 2021 Oct 3.
Published in final edited form as: N Engl J Med. 2020 Dec 31;383(27):2639–2651. doi: 10.1056/NEJMoa2020248

Figure 2. Separation of Hemoglobin Levels between the Treatment Groups.

Figure 2.

Hemoglobin levels in the higher-threshold and lower-threshold groups were recorded before enrollment and until 36 weeks of postmenstrual age. Values are means and 95% confidence intervals (indicated by I bars), adjusted for infant as a random effect. Hemoglobin tests were performed at clinical discretion and were not dictated by protocol. Panel A shows the hemoglobin levels that prompted a red-cell transfusion. Panel B shows all hemoglobin levels that were measured in the two groups during the treatment period.