Table 4

Proportion of patients reporting at least one complication by operation

Surgery type
NHS
ISTC
Adjusted odds ratio
95% CI
P-value






N (%)
N (%)




Cataract surgery
58 (11.5)
9 (3.9)
0.32
0.14 to 0.70
0.004
Hernia repair
79 (24.4)
8 (16.7)
0.46
0.32 to 0.66
<0.001
Varicose vein
83 (41.5)
13 (36.1)
0.75
0.42 to 1.3
0.3
Hip replacement
87 (33.9)
41 (29.1)
0.87
0.52 to 1.5
0.6
Knee replacement
112 (39.6)
39 (24.5)
0.43
0.27 to 0.69
<0.001

Browne et al. BMC Health Services Research 2008 8:78   doi:10.1186/1472-6963-8-78