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. Author manuscript; available in PMC: 2014 May 1.
Published in final edited form as: Ann Thorac Surg. 2012 Jun 15;94(2):564–572. doi: 10.1016/j.athoracsur.2012.01.105

Fig 4.

Fig 4

Mortality data displayed as a funnel plot for STAT Category 4 operations. The horizontal dashed line depicts aggregate STS mortality before discharge. Dashed lines depicting exact 95% binomial prediction limits were overlaid to make a funnel plot. Squares represent the number of cases and mortality before discharge for individual STS Congenital Heart Surgery Database participants (centers). (STAT = The Society of Thoracic Surgeons [STS]-European Association for CardioThoracic Surgery [EACTS] Congenital Heart Surgery Mortality Categories.)