Management of Deep Infection after Instrumentation on Lumbar Spinal Surgery in a Single Institution

Table 1

Demographic data of patients with postoperative infection.

	Implant group	Nonimplant group	value
Postoperative; infection /total (%)	31/1176 (2.64)	7/699 (1.00)	<0.05
Age (years, mean ± SD)	65.5 ± 12.9	67.6 ± 11.8	0.702
Gender, male/female	16/15	2/5	0.410
Operation time (hours)	3.4 ± 0.8	2.7 ± 0.8	<0.05
Bleeding amount (mL)	826.5 ± 361.7	564.3 ± 319.2	0.086
Irrigation amount; (mL)	2080.6 ± 817.5	1464.3 ± 625.4	0.071
Drainage tube indwelling, Y/N	30/1	6/1	0.339
Days for infection start	5.2 ± 0.6	5.0 ± 0.0	0.344
Hospital stay (days)	32.6 ± 3.4	33.7 ± 7.7	0.695