Fig. 4

Time series of the number of RBC transfusion prescription to non-CC/HO patients (upper panel), CC (middle panel) and HO (lower panel) patients with haemoglobin ≥ 70 g/L as a percentage of the total transfusion in the Trust in those cohorts. Also shown the cumulative model fit for each segment (red line), the intervention time (blue), the trend lines prior to the interventions being introduced (dashed red lines), median of the whole data (black), two and three standard deviation from the median (dashed and dotted black lines, respectively)