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Table 1 Baseline characteristics of lung transplantation recipients according to case-volume

From: Adult lung transplantation case-volume and in-hospital and long-term mortality in Korea

Characteristics Total Low volume centersa
(<  5 LTs/year)
High volume centersa
(≥ 5 LTs/year)
P value
Number of recipients 315 71 244  
Number of centers 7 4 3  
Sex     0.897
 Male 184 (58.4) 41 (57.7) 143 (58.6)  
 Female 131 (41.6) 30 (42.3) 101 (41.4)  
Age     0.769
 19 ≤ age < 50 118 (37.5) 24 (33.8) 94 (38.5) 0.769
 50 ≤ age < 60 96 (30.5) 23 (32.4) 73 (29.9)  
 60 ≤ age 101 (32.1) 24 (33.8) 77 (31.6)  
Diagnosis     0.286
 Interstitial lung disease 121 (38.4) 25 (35.2) 96 (39.3)  
 Idiopathic pulmonary fibrosis 95 (30.2) 20 (28.2) 75 (30.7)  
 Chronic Obstructive Pulmonary Disease 67 (21.3) 18 (25.4) 49 (20.1)  
 Acute Respiratory Distress Syndrome 8 (2.5) 4 (5.6) 4 (1.6)  
 Others 24 (7.6) 4 (5.6) 20 (8.2)  
Comorbidities
 Hypertension 123 (39.0) 29 (39.4) 95 (38.9) 0.939
 Diabetes mellitus 96 (30.5) 18 (25.4) 78 (32.0) 0.287
 Coronary artery disease 45 (14.3) 16 (22.5) 29 (11.9) 0.024
 Chronic kidney disease 21 (6.7)   21 (8.6) 0.006
 Cerebrovascular disease 16 (5.1) 2 (2.8) 14 (5.7) 0.539
Elixhauser comorbidity index 14.6 ± 9.81 16.59 ± 9.62 14.02 ± 9.81 0.052
  1. Data are presented as n (%) or mean ± SD
  2. LT lung transplantation
  3. aAverage number of lung transplantations from 2011 to 2016