Table 1 Feature descriptions.
From: CPT to RVU conversion improves model performance in the prediction of surgical case length
Variable | Type | Description |
|---|---|---|
CPT code | Nominal | Current procedural terminology—a five-digit code representing procedure ID |
RVU | Continuous | Relative value unit—measure of procedure complexity for use in billing |
Number of panels | Ordinal | Number of surgical specialties needed for each case |
Number of procedures | Ordinal | Number of procedures performed in each case |
Location | Nominal | One of six buildings within Duke University Health System, both outpatient and inpatient |
Patient class | Nominal | Patient class labels as ambulatory surgery, surgery admit inpatient, inpatient, surgery bedded outpatient, emergency |
First case flag | Nominal | A binary flag indicating the first case of a day for a given operating room |
Day of the week | Nominal | Day that the operation was performed (Mon, Tue, Wed, Thu, Fri, Sat, Sun) |
Primary physician ID | Nominal | Identifier tied to lead surgeon on case |
