Table 5.

Overall variability of the objective function and corresponding optimal screw patterns for each curve. When the optimum is unique, the corresponding screw pattern is bolded; when more than one screw pattern resulted to be optimal, their frequency distribution over the 11 tested correction objectives is reported as a percentage

Patient	Avg ± SD	[min; max]	Max–min	Optimal screw patterns
#1	0.1 ± 0.0	[0.1; 0.2]	0.1	CA: 55%; CPAD:45%
#2	0.1 ± 0.0	[0.1; 0.2]	0.1	CPAD
#3	0.1 ± 0.0	[0.0; 0.2]	0.2	B
#4	0.3 ± 0.1	[0.2; 0.8]	0.7**	A: 73%; CPAD: 27%
#5	0.2 ± 0.1	[0.1; 0.4]	0.3	CA
#6	0.1 ± 0.0	[0.1; 0.2]	0.1	CA: 73%; B: 27%
#7	1.3 ± 0.7	[0.4; 3.3]	2.9	CA
#8	0.1 ± 0.0	[0.1; 0.2]	0.1**	A: 64%; CPAD: 27%; CA: 9%
#9	0.2 ± 0.1	[0.1; 0.4]	0.3	CPAD
#10	0.1 ± 0.0	[0.1; 0.2]	0.1	CPAD: 91%; CA: 9%

The double asterisk ("**") indicates the maximum variability of objective function output, while a single asterisk ("*") indicates when the variability is greater than the average value calculated over all ten cases