Table 1. Absolute and relative longitudinal stent deformation in the proximal main branch and the distal main branch during proximal optimisation in bench.

3.00 mm platform n=15
POT	Δlength in pMB	Δ%	p-value*	Δlength in dMB	Δ%	p-value*
3.00 mm	reference value	–	–	reference value	–	–
3.50 mm	+0.63±0.69 mm	+3.6±3.7%	<0.01	+0.09±0.33 mm	+0.5±2.3%	0.18
4.00 mm	+1.10±0.96 mm	+7.3±6.8%	<0.01	–0.03±0.51 mm	–0.4±3.5%	0.81
4.50 mm	+1.65±0.96 mm	+10.8±6.6%	<0.01	–0.02±0.51 mm	–0.4±3.6%	0.21
5.00 mm	+2.53±1.07 mm	+16.4±5.6%	<0.01	+0.06±0.49 mm	+0.4±3.4%	0.61
5.50 mm	+4.31±1.47 mm	+27.8±7.9%	<0.01	+0.10±0.44 mm	+0.4±3.1%	0.31
3.50 mm platform n=14
POT	Δlength in pMB	Δ%	p-value*	Δlength in dMB	Δ%	p-value*
3.50 mm	reference value	–	–	reference value	–	–
4.00 mm	+0.12±0.40 mm	+0.8±3.1%	0.28	+0.10±0.22 mm	+0.5±1.8%	0.12
4.50 mm	+0.56±0.52 mm	+3.8±3.9%	<0.01	+0.20±0.17 mm	+1.3±1.2%	0.12
5.00 mm	+1.43±1.07 mm	+9.8±8.9%	<0.01	+0.28±0.24 mm	+2.2±1.7%	0.11
5.50 mm	+2.87±0.94 mm	+19.5±6.5%	<0.01	+0.28±0.19 mm	+2.3±1.6%	0.23
*p-value relates to the comparison with the previous step. dMB: distal main branch; pMB: proximal main branch; POT: proximal optimisation technique