Table 5.

Comparison of intraoperative and in-hospital complication rates and reoperation rates between the decompression and fusion groups in the < 70-year and ≥ 70-year age cohorts

	< 70 years			≥ 70 years
	Decompression	Fusion	p	Decompression	Fusion	p
Intra-op complications	0	0	-	4 (6.7%) (all durotomies)	2 (3.8%) (1 durotomy, 1 screw cut out)	0.5
In-hospital complications	1 (3.7%) (POUR)	12 (12.7%) (4 PONV, 4 POUR, 3 acute blood loss anemia, 1 hyponatremia)	0.18	4 (6.7%) (3 POUR, 1 hyponatremia)	12 (23.1%) (3 PONV, 3 POUR, 2 motor deficit, 2 acute blood loss anemia, 1 ileus, 1 hyponatremia)	0.01
Reoperations	2 (7.4%) (both recurrent stenosis)	8 (8.5%) (4 pseudarthrosis, 3 ASD, 1 SSI)	0.85	5 (8.3%) (all recurrent stenosis)	3 (5.7%) (2 pseudarthrosis, 1 ASD)	0.6

Bold values indicate significant p value. POUR postoperative urinary retention, PONV postoperative nausea and vomiting, ASD adjacent segment disease, SSI surgical site infection