Epidemiology of C2 Fractures in the 21st Century: A National Registry Cohort Study of 6,370 Patients from 1997 to 2014

Table 1

Baseline values of patients according to treatment presented as count () or mean ± standard deviation.

			Sex		CCI		Spinal fracture				Surgical technique
		Age	Male	Female		SCI	C1	Subaxial	T	L	Screw	Fusion
		Years
Surgical	1681						236	194	90	30	168	1513
Nonsurgical	4689						394	272	186	122	0	0
All	6370						630	466	276	152	168	1513

: number; SD: standard deviation; CCI: Charlson Comorbidity Index; SCI: spinal cord injury; T: thoracic; L: lumbar.