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Table 2 Patient outcomes

From: Survival and quality of life after surgical aortic valve replacement in octogenarians

   Age < 80 Age ≥ 80  
   N = 597 N = 163 P
In-hospital Outcomes     
 Delirium 37 (6.2) 18 (11.0) 0.034
 Stroke 21 (3.5) 5 (3.1) 0.97
 MI 17 (3.0) 4 (2.6) 1.00a
 AKIN No injury 537 (92.4) 148 (90.8) 0.22
  Stage 1 36 (6.2) 12 (7.4)  
  Stage 2 5 (0.9) 0 (0)  
  Stage 3 3 (0.5) 3 (1.8)  
Hospital stay (days) 7 (5–9) 7 (5–12) 0.031
Mortality    
 In-hospital 13 (2.2) 2 (1.2) 0.75a
 Operative 17 (2.9) 3 (1.9) 0.59a
 1-Year 33 (6.3) 9 (6.5) 1.00
  1. Comparison of operative chararcteristics and patient outcomes. Operative mortality is either 30-day or in-hospital mortality
  2. MI myocardial infarction, AKIN acute kidney injury network
  3. a Fisher’s Exact test