Sagittal reconstruction of lumbosacral contiguous double-level spondylolytic spondylolisthesis: a comparison of double-level and single-level transforaminal lumbar interbody fusion

Table 2 Perioperative parameters of both groups

	In total	Double-level TLIF group	Single-level TLIF group	P value
Surgical duration, minute	278.2 ± 35.8	298.6 ± 29.6	246.5 ± 26.5	< 0.001
Intraoperative blood loss, ml	741.3 ± 96.2	802.2 ± 74.6	684.5 ± 60.5	< 0.001
Hospital stay, day	16.3 ± 4.2	16.8 ± 3.6	15.5 ± 4.8	0.249

ISSN: 1749-799X