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Fig. 1 | BMC Pediatrics

Fig. 1

From: Problems with Bazett QTc correction in paediatric screening of prolonged QTc interval

Fig. 1

Scatter diagrams between heart rate changes from supine to standing (the same horizontal axis in all panels) and QTc changes reported by the Bazett formula (top panel) Fridericia formula (middle panel) and Framingham formula (bottom panel). In each panel, the red circles correspond to girls, and the blue squares to boys. Note the obvious positive correlation between the heart rate changes and the changes of the Bazett corrected QTc intervals as well as a slight negative correlation between the heart rate changes and the changes of the Framingham corrected QTc intervals

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