Table 4.

Cost characteristics

	Hook-hybrid group	Screw group	P value*
Number of levels fused	10.7	12.9	<0.0001
Number of hooks	9.4	0.2	n/a
Number of pedicle screws	0.7	19.1	n/a
Number of crosslinks	2	2	n/a
Number of rods	2	2	n/a
Total number of construct elements	14.8	23.3	<0.0001
Total cost of constructs	$11,247.55	$22,825.73	<0.0001
Cost per fused level	$1,057.92	$1,877.56	<0.0001
Cost per degree of correction of the major curve	$415.28	$559.21	0.0141