Length of stay, costs, and complications in lumbar disc herniation surgery by standard PLIF versus a new dynamic interspinous stabilization technique

Table 1 Demographic and Co-Morbidity profile

	Group 1 (Interspinous)	Group 2 (Fusion)	p-value
Total Number (n = 67)	31	36
Demographics
Age^a	38.2 (±9.3)	41.2 (±7.4)	0.144
Female^b	13 (41.9%)	19 (52.8%)	0.376
BMI^a	26.1 (±3.6)	26.5 (±3.8)	0.566
Smoking^b	13 (41.9%)	13 (36.1%)	0.625
Charlson comorbidity index scoring^b
CCI = 0	25 (80.6%)	30 (83.3%)	0.775
CCI ≥ 1	6 (19.4%)	6 (16.7%)	0.775
Instrumented levels^b
1 level	25 (80.6%)	18 (50%)	0.009
2 levels	6 (19.4%)	18 (50%)	0.009

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