Table 4. Aortic diameter measurements (cm).

Location	Initial diameter	Initial 95% CI	Last diameter	Last 95% CI	p -Value
Root, short axis	3.892	(3.822, 3.962)	3.906	(3.836, 3.976)	0.00 a
Sinus of valsalva	3.954	(3.884, 4.024)	3.978	(3.908, 4.048)	0.00 a
Sinotubular junction	3.387	(3.333, 3.441)	3.405	(3.350, 3.459)	NS
Midascending	4.293	(4.223, 4.363)	4.303	(4.233, 4.373)	0.00 a
Distal ascending	3.676	(3.619, 3.734)	3.681	(3.626, 3.736)	0.00 a
Arch	3.133	(1.986, 4.281)	3.167	(1.941, 4.392)	0.00 a
Proximal descending	2.939	(2.879, 3.000)	2.956	(2.895, 3.017)	0.00 a
Middescending	2.687	(2.640, 2.734)	2.705	(2.657, 2.754)	0.00 a
Distal descending	2.591	(2.547, 2.636)	2.600	(2.556, 2.644)	0.00 a
Diaphragmatic hiatus	2.509	(2.463, 2.555)	2.515	(2.468, 2.563)	0.00 a

Abbreviations: CI, confidence interval; NS, nonsignificant.

^aSignificance at the 0.01 level