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Table 5 Proportion of patients reporting complications by operation

From: Case-mix & patients' reports of outcome in Independent Sector Treatment Centres: Comparison with NHS providers

Operation NHS ISTC Adjusted odds ratio 95% CI P-value
  N (%) N (%)    
Cataract      
   Bleeding 17 (3.4) 5 (2.2) 0.74 0.37 to 1.5 0.4
   Wound infection 18 (3.6) 2 (0.9) 0.13 0.02 to 1.0 0.05
   Urinary problems 12 (2.4) 1 (0.4) 0.26 0.03 to 2.5 0.2
   Adverse drug reaction 19 (3.8) 4 (1.7) 0.53 0.19 to 1.5 0.2
Hernia repair      
   Bleeding 19 (5.9) 2 (4.2) 0.80 0.35 to 1.8 0.6
   Wound infection 35 (10.8) 4 (8.3) 0.58 0.33 to 1.0 0.06
   Urinary problems 20 (6.2) 3 (6.2) 0.82 0.43 to 1.5 0.5
   Adverse drug reaction 21 (6.5) 1 (2.1) 0.16 0.10 to 0.27 <0.001
Varicose vein surgery      
   Bleeding 51 (25.5) 8 (22.2) 0.71 0.30 to 1.7 0.4
   Wound infection 50 (25.0) 9 (25.0) 1.2 0.74 to 2.0 0.4
   Urinary problems 7 (3.5) 1 (2.8) 1.2 0.46 to 3.3 0.7
   Adverse drug reaction 10 (5.0) 0 (0) 1.0 0.94 to 1.0 0.7
Hip replacment      
   Bleeding 27 (10.5) 10 (7.1) 0.88 0.47 to 1.7 0.7
   Wound infection 27 (10.5) 15 (10.6) 1.2 0.58 to 2.6 0.6
   Urinary problems 33 (12.8) 12 (8.5) 0.67 0.35 to 1.3 0.2
   Adverse drug reaction 29 (11.3) 15 (10.6) 0.84 0.39 to 1.8 0.6
Knee replacement      
   Bleeding 25 (8.8) 7 (4.4) 0.45 0.14 to 1.4 0.2
   Wound infection 42 (14.8) 14 (8.8) 0.50 0.28 to 0.90 0.02
   Urinary problems 42 (14.8) 13 (8.2) 0.51 0.29 to 0.88 0.02
   Adverse drug reaction 39 (13.8) 16 (10.1) 0.65 0.43 to 0.97 0.04