Table 3. Procedural characteristics according to leaflet position and mechanism of valve expansion.

Characteristic	Overall (n=1,378)	Supra-annular valve (n=920)	Intra-annular valve (n=458)	p-value (supra-annular vs intra-annular)	Self-expanding valve (n=1,092)	Balloon-expandable valve (n=286)	p-value (self-expanding vs balloon-expandable)
Valve size 25 mm or less	52.2 (719)	30.8 (283)	95.2 (436)	<0.001	39.9 (436)	98.9 (283)	<0.001
Oversizing by perimeter	15.0±8.7	17.5±7.2	11.2±9.9	<0.001	17.0±7.1	9.5±11.4	<0.001
Oversizing by perimeter ≥15%	54.1 (745)	64.2 (591)	33.6 (154)	<0.001	61.0 (666)	27.6 (69)	<0.001
Oversizing by area	36.9±21.2	45.5±18.4	22.0±17.3	<0.001	44.4±17.7	11.9±10.8	<0.001
Oversizing by area ≥15%	82.6 (1,138)	96.3 (886)	55.0 (252)	<0.001	96.7 (1,056)	28.7 (82)	<0.001
Oversizing ≥15%	54.3 (748)	64.2 (591)	34.3 (157)	<0.001	61.0 (666)	28.7 (82)	<0.001
Predilation	41.9 (573)	39.5 (361)	46.9 (212)	0.009	44.3 (481)	32.9 (92)	0.001
Post-dilation	27.8 (380)	31.9 (292)	19.6 (88)	<0.001	32.9 (357)	8.2 (23)	<0.001
Annular rupture	0.3 (4)	0.2 (2)	0.4 (2)	0.548	0.3 (3)	0.3 (1)	0.909
Values are mean±standard deviation or % (n). The values in bold represent differences between groups with p<0.100. Oversizing ≥15% refers to oversizing by perimeter ≥15% for self-expanding valves and oversizing by area ≥15% for balloon-expandable valves.