Table 2.
Factors predicting conversion to open surgery (training set, N = 679)
| Parameters | OR ± SE | p-value | Step exclusion |
|---|---|---|---|
| BMI (for each Kg/m2) | 1.01 ± 0.04 | 0.900 | 2nd |
| ASA score (for each class) | 2.86 ± 0.89 | 0.001 | Final |
| Previous surgery (No vs. yes) | 1.41 ± 0.55 | 0.376 | 5th |
| Symptoms (No vs. yes) | 1.03 ± 0.55 | 0.994 | 1st |
| Diagnosis | 7th | ||
| Non-functioning benign lesion | Referent | ||
| Functioning benign lesion | 0.41 ± 0.21 | 0.082 | |
| Pheochromocytoma | 0.23 ± 0.18 | 0.063 | |
| Malignant lesion | 2.52 ± 1.27 | 0.068 | |
| Side | 4th | ||
| Right | Referent | ||
| Left | 0.71 ± 0.29 | 0.415 | |
| Bilateral | 2.06 ± 1.93 | 0.440 | |
| Size (for each cm) | 1.20 ± 0.07 | 0.005 | Final |
| Type of surgeon (Junior vs. senior) | 1.05 ± 0.07 | 0.479 | 3rd |
| Extended resection planned (No vs. yes) | 8.85 ± 7.20 | 0.007 | Final |
| Others surgical procedures planned (No vs. yes) | 2.64 ± 2.18 | 0.239 | 6th |
OR odds ratio, SE standard error, BMI Body Mass Index, ASA American Society of Anesthesiologists score