Table 5.

Differences of Z-score sets for cardiac structures

Z-score sets	Mean difference (SD)	P value
Left heart structures
Mitral valve annulus (Krishnan-Schneider)	0.68 (0.49–0.87)	< 0.001
Left ventricular length (Krishnan-Schneider)	–2.20 (–2.29 to –2.11)	< 0.001
Left ventricular width (Gabbay-Benziv-Schneider)	–0.42 (–0.49 to –0.36)	< 0.001
Aortic valve annulus (Krishnan-Schneider)	0.53 (0.46–0.59)	< 0.001
Ascending aorta (Krishnan-Schneider)	0.05 (–0.02–0.13)	0.17
Isthmus aortae (sag.) (Krishnan-Pasquini)	–1.59 (–1.83 to –1.36)	< 0.001
Descending aorta (Krishnan-Schneider)	–0.78 (–0.82 to –0.74)	< 0.001
Right heart structures
Tricuspid valve annulus (Krishnan-Schneider)	0.57 (0.51–0.62)	< 0.001
Right ventricular length (Krishnan-Schneider)	–1.73 (–1.83 to –1.63)	< 0.001
Right ventricular width (Gabbay-Benziv-Schneider)	–0.003 (–0.06- 0.06)	0.92
Pulmonary valve annulus (Krishnan-Schneider)	0.68 (0.65–0.72)	< 0.001
Ductus arteriosus (sag.) (Krishnan-Schneider)	–2.91 (–3.10 to –2.71)	< 0.001

SD: standard deviation