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Table 1 Comparisons of basic characteristics of patients between ASD and non-ASD group

From: Relationship between postoperative lordosis distribution index and adjacent segment disease following L4-S1 posterior lumbar interbody fusion

 

Total (n = 200)

Non-ASD

ASD

P

Age, years

64.8 ± 8.5

64.7 ± 8.7

66.1 ± 5.1

0.315

Sex, n (%)

   

0.773

 Male

89 (44.5)

82 (44.8)

7 (41.2)

 

 Female

111 (55.5)

101 (55.2)

10 (58.8)

 

BMI

24.14 ± 3.42

23.87 ± 3.33

27.04 ± 3.00

< 0.001

BMI group, n (%)

   

0.001

BMI < 25 kg/m2

121 (60.5)

117 (63.9)

4 (23.5)

 

BMI ≥ 25 kg/m2

79 (39.5)

66 (36.1)

13 (76.5)

 

Comorbidities, n (%)

 Hypertension

131 (65.5)

119 (65.0)

12 (70.6)

0.645

 Diabetes Mellitus

57 (28.5)

51 (27.9)

6 (35.3)

0.713

 Coronary artery disease

97 (48.5)

90 (49.2)

7 (41.2)

0.528

 COPD

39 (19.5)

34 (18.6)

5 (29.4)

0.448

Hospital stay (days)

9.0 (7.0~11.0)

9.0 (7.0~11.0)

8.0 (6.0~11.5)

0.757

Follow-up period (months)

84.0 (70.0~98.0)

85.0 (72.0~99.0)

62.8 ± 24.6

< 0.001

Intraoperative blood loss (ml)

290 (220~380)

290 (220~380)

294.7 ± 111.0

0.920

Operation time (hours)

4.45 (3.70~5.30)

4.50 (3.70~5.30)

4.35 ± 0.87

0.525

  1. Mann-Whitney U test, Pearson χ2 test, independent-samples t test
  2. ASD adjacent segment disease, BMI body mass index, COPD chronic obstructive pulmonary disease