Skip to main content

Table 4 Patient characteristics between in-hospital death (+) 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

  Death (−)
(N = 2428) 		Death (+)
(N = 18) 		P value
Age (years)    0.25
 65 to 74 750
(30.9%) 		3
(0.4%) 		 
 75 to 84 1389
(57.2%) 		11
(0.8%) 		 
 Over 85 289
(11.9%) 		4
(1.4%) 		 
Sex    < 0.001***
 Male 598
(24.6%) 		11
(61.1%) 		 
 Female 1830
(75.4%) 		7
(38.9%) 		 
BMI (kg/m2)    0.001**
 Less than 18.5 340
(14.0%) 		8
(44.4%) 		 
 18.5 to 22.9 1073
(44.2%) 		5
(27.8%) 		 
 23.0 to 24.9 426
(17.5%) 		1
(5.6%) 		 
 25.0 to 29.9 409
(16.9%) 		1
(5.6%) 		 
 Over 30.0 67
(2.8%) 		0
(0%) 		 
 Unknown 113
(4.6%) 		3
(16.6%) 		 
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    0.014*
 Scheduled 1374
(56.6%) 		5
(27.8%) 		 
 Unscheduled 1054
(43.4%) 		13
(72.2%) 		 
Emergency transport    0.19
 Yes 395
(16.3%) 		5
(27.8%) 		 
 No 2033
(83.7%) 		13
(72.2%) 		 
Hospital type    0.31
 Academic 131
(5.4%) 		0
(0%) 		 
 Non-academic 2297
(94.6%) 		18
(100%) 		 
ADL score for admission (points)    0.26
 0 to 10 1008
(41.5%) 		10
(55.6%) 		 
 11 to 20 1002
(41.3%) 		4
(22.2%) 		 
 Unknown 418
(17.2%) 		4
(22.2%) 		 
Surgical procedure    0.62
 Anterior fusion 431
(17.8%) 		4
(22.2%) 		 
 Posterior fusion 1997
(82.2%) 		14
(77.8%) 		 
Preoperative comorbidities    
 Diabetes mellitus 350
(14.4%) 		4
(22.2%) 		0.35
 Cardiovascular disease 134
(5.5%) 		2
(11.1%) 		0.30
 Cardiac failure 74
(3.1%) 		2
(11.1%) 		0.049*
 Atrial fibrillation 59
(2.4%) 		4
(22.2%) 		< 0.001***
 Hypertension 691
(28.5%) 		0
(0%) 		0.008**
 Cerebrovascular disease 33
(1.4%) 		1
(5.6%) 		0.13
 Chronic obstructive pulmonary disease 11
(0.5%) 		0
(0%) 		0.78
 Pneumonia 7
(0.3%) 		0
(0%) 		0.82
 Renal failure 47
(1.9%) 		2
(11.1%) 		0.006**
 Hepatic failure 60
(2.5%) 		1
(5.6%) 		0.40
 Gastric ulcer and hemorrhage 90
(3.7%) 		0
(0%) 		0.41
 Malignancy 89
(3.7%) 		1
(5.6%) 		0.67
 Rheumatoid arthritis 101
(4.2%) 		1
(5.6%) 		0.77
 Dementia 48
(2.0%) 		1
(5.6%) 		0.28
 Depression 81
(3.3%) 		1
(5.6%) 		0.60
 Schizophrenia 44
(1.8%) 		2
(11.1%) 		0.004**
  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
Back to article page

Journal of Orthopaedic Surgery and Research

ISSN: 1749-799X