Table 4
Comparison of operator experience and complication rates
Complications/ number of patients
Rates per patient (95% CI)
Experienced
8/871
0.9% (0.3 to 1.5)
Trainee
26/1422
1.8% (1.1 to 2.5)
Experienced infrequent
5/259
1.9% (0.2 to 3.6)
Inexperienced
7/37
18.9% (6.0 to 31.8)
4-150
↵
4-150
p < 0.001.