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Scatter plots illustrating the correlation between hemoglobin and C-rSO2 in transfused (left) and non-transfused infants. Both groups exhibit statistically-significant positive correlations indicating that C-rSO2 decreases with worsening anemia. The correlation is weak in the transfused group (r2=0.04, p=0.02) and moderate in the non-transfused group (r2=0.24, p<0.01).
