Efficacy and safety of anterior cervical discectomy and fusion (ACDF) through mini-incision and posterior laminoplasty (LAMP) for treatment of long-level cervical spondylosis: a retrospective cohort study

Table 1 Sample characteristics of Groups A and B

Item	Group A	Group B	P-value
Age (year)	57.9 ± 8.9	62.1 ± 9.2	0.215
Gender (n)
Male	29	25
Female	13	11
Follow-up time (months)	41.2 ± 3.2	40.9 ± 2.8	0.767
Operation time (minutes)	127.5 ± 30.0	131.2 ± 29.4	0.534
Blood loss (mL)	50.5 ± 23.8	326.4 ± 60.4	0.015*
Remove the drainage tube (days)	2 ( 1–2)	5 (3–7)	0.026*
hospital stay (days)	4 ( 3–7)	7 ( 5–14)	0.031*
Surgical incision (cm)
Three-level operation	2.5 ± 0.4	10 ± 2.6	< 0.01*
Four-level operation	3.4 ± 0.5	13 ± 2.2	< 0.01*
Complications
Axial pain	0 (0%)	3 (8.33%)
C5 palsy	0 (0%)	2 (5.56%)
Transient dysphagia	0 (0%)	0 (0%)
CSF leakage	0 (0%)	1 (2.78%)

ISSN: 1471-2482