The authors addressed the risk of particular variables on the occurrence of neurological injury during surgery. Further discussion of the clinical output of such findings would be useful. Did the authors consider investigating the risk of the given independent variables on recovery, good/poor outcome or requirement for additional surgery? Such findings may potentially inform a surgeon's decision to treat. Please ensure the use of term neurological or neurologic is consistent throughout manuscript Please check there is adequate spacing between words Ensure all references in the text correspond to reference list Line 76-77. Consider reporting variation in incident figures if known Consider using headings within the background to make it clearer to the reader which aim you are addressing, therefore which variables are being defined and which outcomes are being used. Then consider using headings in the results, according to what outcome the authors are reporting.