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Table 5 Regression analyses of risk factors for major complications

From: Lower conversion rate with robotic assisted rectal resections compared with conventional laparoscopy; a national cohort study

  Rate (%) Univariable Multivariable
   OR (95% CI) p value aOR (95% CI) p value
All patients 155/1284 (12.1)     
Age group      
  < 65 68/503 (13.5) Ref 0.192   
 65–80 75/631 (11.9) 0.86 (0.61–1.23)    
  > 80 12/150 (8.0) 0.56 (0.29–1.06)    
Sex      
 Female 43/502 (8.6) Ref 0.002 Ref 0.009
 Male 112/782 (14.3) 1.78 (1.23–2.59)   1.67 (1.14–2.44)  
WHO ECOG-score      
 0, 1 148/1210 (12.2) Ref 0.664   
 2, 3, 4 7/67 (10.4) 0.84 (0.38–1.87)    
Severe pulmonary disease      
 No 139/1236 (11.2) Ref  < 0.001 Ref  < 0.001
 Yes 16/48 (33.3) 3.95 (2.11–7.48)   3.34 (1.72–6.46)  
Severe cardiac disease      
 No 131/1211 (10.8) Ref  < 0.001 Ref  < 0.001
 Yes 24/73 (32.9) 4.04 (2.39–6.79)   3.42 (1.97 (5.94)  
Weight class (BMI)      
  < 18.5 2/24 (8.3) 0.98 (0.23–4.35) 0.007   
 18.5–25 43/511 (8.4) Ref    
 25–30 70/496 (14.1) 1.79 (1.19–2.67)    
  > 30 37/228 (16.2) 2.11 (1.32–3.38)    
Med. Diabetes      
 No 135/1150 (10.5) Ref 0.285   
 Yes 20/134 (14.9) 1.32 (0.79–2.19)    
ASA classification      
 1–2 102/871 (11.7) Ref 0.564   
 3–4 53/413 (12.8) 1.11 (0.79–1.58)    
Operative technique      
 LAR 105/743 (14.1) Ref 0.020 Ref 0.010
 Hartmann 7/109 (6.4) 0.42 (0.19–0.92   0.36 (0.16–0.81)  
 APR 43/432 (10.0) 0.67 (0.46–0.78)   0.66 (0.45–0.97)  
Robotic assistance      
 No 112/909 (12.3)   0.669   
 Yes 43/375 (11.5) 0.92 (0.63–1.34)    
Conversion      
 Yes 20/95 (21.1) 2.09 (1.23–5.52) 0.006 1.85 (1.07–3.23) 0.029
 No 135/1189 (11.4) Ref   Ref