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Table 2 Patient characteristics between systemic complication (+) and (−)

From: Risk factors related to perioperative systemic complications and mortality in elderly patients with osteoporotic vertebral fractures—analysis of a large national inpatient database

 

Complication (−) (N = 1948)

Complication (+) (N = 498)

P value

Age (years)

  

0.012*

 65 to 74

627

(32.2%)

126

(25.3%)

 

 75 to 84

1094

(56.2%)

306

(61.4%)

 

 Over 85

227

(11.6%)

66

(13.3%)

 

Sex

  

0.06

 Male

469

(24.1%)

140

(28.1%)

 

 Female

1479

(75.9%)

358

(71.9%)

 

BMI (kg/m2)

  

0.16

 Less than 18.5

272

(14.0%)

76

(15.2%)

 

 18.5 to 22.9

871

(44.7%)

207

(41.6%)

 

 23.0 to 24.9

349

(17.9%)

78

(15.7%)

 

 25.0 to 29.9

322

(16.5%)

88

(17.7%)

 

 Over 30.0

51

(2.6%)

16

(3.2%)

 

 Unknown

83

(4.3%)

33

(6.6%)

 

Smoking index

  

0.82

 0

1899

(78.2%)

13

(72.2%)

 

 1 to 999

227

(9.4%)

2

(11.1%)

 

 Over 1000

302

(12.4%)

3

(16.7%)

 

Admission type

  

0.016*

 Scheduled

1122

(57.6%)

257

(51.6%)

 

 Unscheduled

826

(42.4%)

241

(48.4%)

 

Emergency transport

  

0.31

 Yes

311

(16.0%)

89

(17.9%)

 

 No

1637

(84.0%)

409

(82.1%)

 

Hospital type

  

0.46

 Academic

101

(5.2%)

30

(6.0%)

 

 Non-academic

1847

(94.8%)

468

(94.0%)

 

ADL score for admission (points)

  

< 0.001***

 0 to 10

780

(40.0%)

238

(47.8%)

 

 11 to 20

841

(43.2%)

165

(33.1%)

 

 Unknown

327

(16.8%)

95

(19.1%)

 

Surgical procedure

  

< 0.001***

 Anterior fusion

319

(16.4%)

116

(23.3%)

 

 Posterior fusion

1629

(83.6%)

382

(76.7%)

 

Preoperative comorbidities

   

 Diabetes mellitus

270

(13.9%)

84

(16.9%)

0.09

 Cardiovascular disease

100

(5.1%)

36

(7.2%)

0.07

 Cardiac failure

60

(3.1%)

16

(3.2%)

0.88

 Atrial fibrillation

41

(2.1%)

22

(4.4%)

0.004**

 Hypertension

541

(27.8%)

150

(30.1%)

0.30

 Cerebrovascular disease

27

(1.4%)

7

(1.4%)

0.97

 Chronic obstructive pulmonary disease

8

(0.4%)

3

(0.6%)

0.57

 Pneumonia

6

(0.3%)

1

(0.2%)

0.69

 Renal failure

32

(1.6%)

17

(3.4%)

0.012*

 Hepatic failure

44

(2.3%)

17

(3.4%)

0.14

 Gastric ulcer and hemorrhage

75

(3.9%)

15

(3.0%)

0.38

 Malignancy

72

(3.7%)

18

(3.6%)

0.93

 Rheumatoid arthritis

74

(3.8%)

28

(5.6%)

0.07

 Dementia

39

(2.0%)

10

(2.0%)

0.99

 Depression

66

(3.4%)

16

(3.2%)

0.85

 Schizophrenia

33

(1.7%)

13

(2.6%)

0.18

  1. Significant values are given as follows: *P < 0.05, **P < 0.01, ***P < 0.001
  2. BMI body mass index, ADL activity of daily living