Table 1.

Comparison of patient age, angles and distances between the three types of aortic arch

						95% CI
	Arch type	n	Mean	SD	SEM	Lower limit	Upper limit	P-value
Age (years)	I	41	67.35	8.66	1.35	64.61	70.08	0.018*
	II	33	68.67	11.57	2.01	64.56	72.77
	III	18	74.67	7.52	1.77	70.93	78.41
BT_S (°)	I	41	84.84	13.54	2.11	80.56	89.11	0.769
	II	33	86.17	12.99	2.26	81.57	90.78
	III	18	87.91	17.63	4.15	79.14	96.67
BT_C (°)	I	41	87.60	13.98	2.18	83.19	92.01	0.774
	II	33	88.09	12.47	2.17	83.67	92.51
	III	18	86.66	12.24	2.88	80.57	92.74
	III	17	88.24	15.98	3.87	80.02	96.45
BT_PS_H (°)	I	41	83.55	12.89	2.01	79.48	87.62	0.411
	II	33	84.65	14.52	2.53	79.51	89.80
	III	18	87.84	14.49	3.41	80.64	95.05
BT_PS_LA (°)	I	41	64.54	13.25	2.07	60.36	68.72	0.000*
	II	33	54.84	13.92	2.42	49.91	59.78
	III	18	49.44	13.43	3.16	42.76	56.12
BT_PC_H (°)	I	41	95.18	12.03	1.88	91.38	98.97	0.650
	II	33	95.41	11.31	1.97	91.40	99.42
	III	18	92.22	12.32	2.90	86.10	98.35
LCA_C (°)	I	34	67.55	13.51	2.32	62.83	72.26	0.011*
	II	32	72.84	11.49	2.03	68.70	76.99
	III	17	78.99	11.01	2.67	73.33	84.65
LCA_S (°)	I	34	71.77	14.19	2.43	66.82	76.72	0.002*
	II	32	80.43	10.75	1.90	76.56	84.31
	III	17	88.24	15.98	3.87	80.02	96.45
LCA_PS_H (°)	I	34	66.33	12.42	2.13	62.00	70.66	0.000*
	II	32	76.57	10.18	1.80	72.90	80.24
	III	17	84.02	11.35	2.75	78.18	89.86
LCA_PS_LA (°)	I	34	55.89	13.33	2.29	51.24	60.54	0.380
	II	32	53.64	12.16	2.15	49.26	58.03
	III	17	52.33	11.01	2.67	46.67	57.99
LCA_PC_H (°)	I	34	75.61	11.56	1.98	71.58	79.64	0.067
	II	32	78.93	12.00	2.12	74.60	83.25
	III	17	83.39	8.86	2.15	78.83	87.94
LSA_C (°)	I	41	75.57	9.71	1.52	72.50	78.63	0.006*
	II	33	78.75	9.67	1.68	75.32	82.18
	III	18	83.79	7.57	1.78	80.02	87.55
LSA_S (°)	I	41	68.07	10.50	1.64	64.76	71.39	0.005*
	II	33	74.38	12.48	2.17	69.96	78.81
	III	18	78.35	11.10	2.62	72.83	83.87
LSA_PS_H (°)	I	41	65.78	9.79	1.53	62.69	68.87	0.003*
	II	33	71.33	14.09	2.45	66.34	76.33
	III	18	77.97	11.26	2.65	72.37	83.57
LSA_PS_LA (°)	I	41	64.10	10.65	1.66	60.74	67.46
	II	33	58.64	15.15	2.64	53.27	64.02
	III	18	49.77	7.64	1.80	45.97	53.57
LSA_PC_H (°)	I	41	85.50	10.18	1.59	82.29	88.72	0.963
	II	33	85.95	8.02	1.40	83.10	88.79
	III	18	86.89	9.96	2.35	81.93	91.84
Curvature 1 (°)	I	41	122.73	8.32	1.30	120.10	125.36	0.068
	II	33	127.67	11.41	1.99	123.62	131.71
	III	18	129.29	11.23	2.65	123.71	134.88
Curvature 2 (°)	I	34	114.00	8.09	1.39	111.18	116.82	0.928
	II	32	114.59	8.04	1.42	111.69	117.49
	III	17	114.70	6.38	1.55	111.42	117.98
Curvature 3 (°)	I	41	106.60	8.29	1.29	103.99	109.22	0.231
	II	33	105.45	10.27	1.79	101.80	109.09
	III	18	102.07	8.90	2.10	97.65	106.50
Arch angulation (°)	I	41	65.70	6.59	1.03	63.62	67.78	0.000*
	II	32	60.19	7.02	1.24	57.66	62.73
	III	18	56.22	6.53	1.54	52.97	59.47
Distance BT_LCA (cm)	I	34	1.26	0.23	0.04	1.18	1.34	0.686
	II	32	1.34	0.33	0.06	1.22	1.46
	III	17	1.38	0.50	0.12	1.12	1.63
Distance LCA_LSA (cm)	I	34	1.77	0.37	0.06	1.64	1.90	0.261
	II	32	1.96	0.39	0.07	1.82	2.10
	III	17	1.92	0.54	0.13	1.64	2.19
Distance BT_LSA (cm)	I	7	2.31	0.43	0.16	1.92	2.71	0.177
	II	1	1.80	–	–	–	–
	III	1	3.00	–	–	–	–

*Statistical significance at the P-value. CI, confidence interval. For the abbreviations of the measured parameters refer to the text.