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. Author manuscript; available in PMC: 2019 Jul 1.
Published in final edited form as: Stat Methods Med Res. 2018 Jul 12;28(9):2710–2723. doi: 10.1177/0962280218786302

Figure 1.

Figure 1.

Simulation results for testing the changes in mean rSO2 levels between pre- and post-transfusion using the proposed test for MAUC and the standard t-test. (a) We compared type I error rate at various alpha levels when there was no difference in the mean rSO2 level between pre- and post-transfusion periods. The proposed test had a type I error that was closer to the nominal level. (b) We compared the power of the tests for detecting the differences in mean rSO2 levels when alpha ¼ 0.05. The proposed test demonstrated much higher power as compared with the standard t-test.