Table 5 Proportion of patients reporting complications by operation

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