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Table 4 Characteristics of patients with or without ASD after MIS-TLIF

From: Adjacent segment disease after minimally invasive transforaminal lumbar interbody fusion for degenerative lumbar diseases: incidence and risk factors

Variable

ASD

n = 34

N-ASD

n = 684

p value

Age (y)

64.7 ± 15.1

55.1 ± 14.6

0.039

Gender (M/F)

22/12

324/360

0.348

Smoking (yes/no)

8/26

141/543

0.682

Presence of diabetes (yes/no)

5/29

74/610

0.480

Presence of hypertension (yes/no)

10/24

234/450

0.564

Bone mineral density (T score)

−2.8 ± 1.4

−1.7 ± 0.8

0.038

BMI (kg/m2)

29.7 ± 2.1

22.4 ± 2.1

0.040

Operative time (minutes)

108.7 ± 12.1

110.3 ± 17.2

0.780

Blood loss (ml)

120.3 ± 20.6

113.8 ± 16.9

0.521