Table 1.
Factors predicting an operative time over 75th percentile (training set, N = 679)
| Parameters | OR ± SE | p-value | Step exclusion |
|---|---|---|---|
| Gender (Female vs. male) | 2.04 ± 0.45 | 0.001 | Final |
| Age (for each year) | 0.98 ± 0.01 | 0.189 | 4th |
| BMI (for each Kg/m2) | 1.07 ± 0.02 | 0.002 | Final |
| ASA score (for each class) | 1.29 ± 0.22 | 0.126 | 5th |
| Previous surgery (No vs. yes) | 1.53 ± 0.33 | 0.048 | Final |
| Symptoms (No vs. yes) | 0.72 ± 0.16 | 0.146 | 3rd |
| Clinical and radiological diagnosis | 2nd | ||
| Non-functioning benign lesion | Referent | ||
| Functioning benign lesion | 1.21 ± 0.38 | 0.516 | |
| Pheochromocytoma | 1.71 ± 0.63 | 0.142 | |
| Malignant lesion | 1.19 ± 0.55 | 0.690 | |
| Side | Final | ||
| Right | Referent | ||
| Left | 1.12 ± 0.23 | 0.590 | |
| Bilateral | 21.8 ± 17.6 | < 0.001 | |
| Size (for each cm) | 1.16 ± 0.06 | 0.002 | Final |
| Type of surgeon (Junior vs. senior) | 0.97 ± 0.04 | 0.468 | 1st |
| Cumulative sum of procedures | 0.99 ± 0.01 | < 0.001 | Final |
| Extended resection planned (No vs. yes) | 26.72 ± 24.67 | < 0.001 | Final |
| Others surgical procedures planned (No vs. yes) | 4.32 ± 2.61 | 0.015 | Final |
OR odds ratio, SE standard error, BMI Body Mass Index, ASA American Society of Anesthesiologists score