Fig. 2
From: Problems with Bazett QTc correction in paediatric screening of prolonged QTc interval
For each of the correction formulas and for each of the postural positions, the corresponding pie chart shows the proportion of children who were found to have the QTc interval below 440 ms (in green), between 440 and 460 ms (in amber), between 460 and 480 ms (in red) and above 480 ms (in dark brown). Note the substantial differences between the Bazett formula and the other two formulas, especially when applied to the interval measurements in the standing ECGs