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Table 2 Mortality and major complications following surgery according to age groups

From: Impact of age and comorbidity burden on mortality and major complications in older adults undergoing orthopaedic surgery: an analysis using the Japanese diagnosis procedure combination database

  Cervical laminoplasty Lumbar decompression Lumbar arthrodesis Total knee arthroplasty p
(n = 16,020) (n = 31,605) (n =18,419) (n = 41,060)
Inhospital death, n (%) 32 (0.20) 35 (0.11) 27 (0.15) 27 (0.066) < 0.001
  Age ≤ 64 years 5(0.077) 4 (0.045) 3 (0.043) 1 (0.028)  
    65–79 17(0.22) 20 (0.11) 17 (0.17) 15 (0.055)  
    ≥ 80 10(0.55) 11 (0.24) 7 (0.51) 11 (0.11)  
Postoperative complications, n (%)      
  Surgical site infection 320 (2.0) 511 (1.6) 362 (2.0) 636 (1.5) < 0.001
  Sepsis 25 (0.16) 53 (0.17) 53 (0.29) 61 (0.15) 0.002
  Cardiac events 279 (1.7) 508 (1.6) 302 (1.6) 677 (1.6) 0.754
  Respiratory complications 96 (0.60) 104 (0.33) 88 (0.48) 196 (0.48) < 0.001
  Pulmonary embolism 16 (0.10) 31 (0.10) 31 (0.17) 167 (0.41) < 0.001
  Stroke 71 (0.44) 74 (0.23) 42 (0.23) 92 (0.22) < 0.001
  Acute renal failure 1 (0.006) 8 (0.025) 7 (0.038) 15 (0.037) 0.227
At least one complication, n (%) 757 (4.7) 1,197 (3.8) 808 (4.4) 1,686 (4.1) < 0.001
  Age ≤ 64 years 264 (4.0) 254 (2.9) 248 (3.6) 106 (3.0)  
    65–79 384 (5.0) 716 (3.9) 467 (4.6) 1,114 (4.1)  
    ≥ 80 109 (6.0) 227 (5.0) 93 (6.7) 466 (4.9)