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Table 1 Demographic characteristics

From: The relationship between S1 screw loosening and postoperative outcome in patients with degenerative lumbar scoliosis

 

S1 screw non-loosening group

S1 screw loosening group

P value

Age

61.5 ± 7.3

65.3 ± 4.7

0.011

Sex (Male/Female)

9/37

5/27

0.656

BMI

26.3 ± 4.3

25.8 ± 4.3

0.67

Number of fused levels

6.2 ± 1.8

6.2 ± 2.0

0.968

Osteoporosis

20.6%(7/34)

75.0%(18/24)

<0.001

L1-L4 average T score

−0.6 ± 2.2

−1.7 ± 1.6

0.034

T score of total hip joint

−1.0 ± 1

−1.6 ± 0.7

0.033

History of smoking

6.5%(3/46)

3.1%(1/32)

0.504

Menopause

78.3%(36/46)

78.1%(25/32)

0.989

Hypertension

32.6%(15/46)

62.5%(20/32)

0.009

Diabetes mellitus

23.9%(11/46)

21.9%(7/32)

0.834

Coronary artery disease

2.2%(1/46)

12.5%(4/32)

0.067

Fusion rate

95.7%(44/46)

90.6%(29/32)

0.373

Interbody fusion

78.3%(36/46)

75%(24/32)

0.789

L5/S1 interbody fusion

19.6%(9/46)

31.3%(10/32)

0.237

Deep infection

2.2%(1/46)

6.3%(2/32)

0.357

Cerebrospinal fluid leakage

2.2%(1/46)

0%(0/32)

0.401