Table 2 Baseline of the operators
historic control group | PDCA group | X2 | P value | |
|---|---|---|---|---|
Number of cases | 20 | 36 | 0.240 | 0.625 |
Residents in the third year of standardized training [cases, n(%)] | 13(65%) | 21(58%) | ||
Residents in the second year of standardized training [cases, n(%)] | 7(35%) | 15(42%) | ||
Majors of the residents | 1.3060a | 0.835 | ||
Internal medicine | 9 (45%) | 17 (47%) | ||
Anaesthesiology | 1 (5%) | 1 (3%) | ||
Surgery | 3 (15%) | 3 (8%) | ||
Undetermined | 7 (35%) | 15 (42%) | ||