Full endoscopic laminotomy decompression versus anterior cervical discectomy and fusion for the treatment of single-segment cervical spinal stenosis: a retrospective, propensity score-matched study

Table 2 Demographic characteristics before propensity score matching

Demographics	Endoscopy group (n = 62)	ACDF group (n = 76)	SMD	P value
Age (years)	63.44 ± 8.38	66.47 ± 8.59	0.352	0.039
BMI (kg/m²)	23.65 ± 2.95	23.74 ± 2.73	0.032	0.856
Gender, n (%)			0.009	0.960
Male	34 (54.8)	42 (55.3)
Female	28 (45.2)	34 (44.7)
Disease duration (months)	20.98 ± 8.27	24.51 ± 7.72	0.434	0.011
Smoking, n (%)	20 (32.3)	25 (32.9)	0.014	0.937
Medical history, n (%)
Hypertension	19 (30.6)	24 (31.6)	0.020	0.906
Diabetes	20 (32.3)	25 (32.9)	0.014	0.937
Operative segment			0.000	0.999
C3–4	6 (9.7)	7 (9.2)
C4–5	15 (24.2)	18 (23.7)
C5–6	23 (37.1)	29 (38.2)
C6–7	18 (29.0)	22 (28.9)
Pathological type, n (%)			0.007	0.928
Myelopathy	41 (66.1)	48 (63.2)
Myelo-radiculopathy	19 (30.6)	25 (32.9)
Radiculopathy	2 (3.2)	3 (3.9)

Bolding is to indicate SMD > 0.2 or P ≤ 0.05, which means that the corresponding confounders are not balanced between the two groups
Continuous data are presented as mean ± SD; categorical data are presented as n (%); P < 0.05 considered significant; ACDF anterior cervical discectomy and fusion; BMI body mass index; SMD standardized mean difference; absolute value of SMD > 0.2 considered unbalanced

ISSN: 1749-799X