Establishing an appropriate Z score regression equation for Chinese pediatric coronary artery echocardiography: a multicenter prospective cohort study

Table 4 Based on the same set of raw data, two groups result of Z scores calculated by SZ method and D method respectively

BSA (m²)	LCA -Z score		LAD -Z score		pRCA -Z score
BSA (m²)	SZ method	D method	SZ method	D method	SZ method	D method
0.2–0.3	0.104 ± 0.465	1.354 ± 0.921*	0.295 ± 0.395	1.761 ± 0.731*	−0.040 ± 0.256	0.979 ± 0.490*
~ 0.4	0.135 ± 0.329	1.178 ± 0.665*	0.140 ± 0.341	1.316 ± 0.616*	0.0869 ± 0.376	0.892 ± 0.751*^▲
~ 0.5	0.133 ± 0.310	1.014 ± 0.655*	0.147 ± 0.345	1.207 ± 0.653*^▲	0.084 ± 0.344	0.681 ± 0.681*^▲
~ 0.6	0.033 ± 0.286	0.594 ± 0.806*^▲	0.060 ± 0.314	0.579 ± 1.415*^▲	0.049 ± 0.305	0.336 ± 0.758*^▲
~ 0.7	0.052 ± 0.268	0.537 ± 0.576*^▲	0.067 ± 0.311	0.804 ± 0.601*^▲	0.037 ± 0.315	0.158 ± 0.621*^▲
~ 0.8	−0.027 ± 0.355	0.261 ± 0.748*	0.024 ± 0.342	0.621 ± 0.651*	0.075 ± 0.357	0.071 ± 0.717
~ 0.9	−0.026 ± 0.328	0.142 ± 0.703*	−0.018 ± 0.309	0.440 ± 0.589*	−0.036 ± 0.319	− 0.299 ± 0.607*
~ 1.0	0.019 ± 0.334	0.038 ± 0.682	−0.013 ± 0.306	0.315 ± 0.560*	−0.042 ± 0.325	− 0.533 ± 0.606*
~ 1.1	− 0.065 ± 0.298	− 0.167 ± 0.646	− 0.103 ± 0.343	0.097 ± 0.649*	− 0.116 ± 0.325	−0.729 ± 0.577*
~ 1.2	−0.073 ± 0.362	− 0.26 ± 0.775*	− 0.081 ± 0.057	0.057 ± 0.619*	− 0.103 ± 0.361	−0.812 ± 0.631*
~ 1.3	0.041 ± 0.267	−0.301 ± 0.616*^▲	0.002 ± 0.18	0.122 ± 0.365*	0.023 ± 0.289	−0.6943 ± 0.546*
~ 1.4	0.068,0.384	−0.426 ± 0.857*	−0.067 ± 0.251	− 0.082 ± 0.490	0.018,0.298	− 0.882 ± 0.560*

^▲ according to Anderson darling test, P < 0.05 does not conform to normal distribution;
* P values for differences between the two groups of Z scores results calculated by SZ method and D method were less than0 .05

ISSN: 1471-2431