Table 3.

Details of Clavien complications for diabetic and control patients

	Controls (n=97)	Diabetics (n=111)
No complications	81 (83.5%)	79 (71.2%)
Clavien I	9	25
Urinary retention	8	19
Ileus	1	1
Basal atelectasis		1
Wound dehiscence (managed conservatively)		1
Prolonged wound discharge		1
Neurapraxia		1
Constipation		1
Clavien II	4	4
Atrial fibrillation (requiring bisoprolol)		1
Pneumonia	1	1
Urinary tract infection	1	1
Blood transfusion		1
Wound infection	2
Clavien IIIa	0	1
Myocardial infarction, coronary artery stent		1
Clavien IIIb	2	2
Washout of deep wound infection	2
Evacuation of haematoma		1
Reoperation due to malplacement of pedicle screw		1
Total complications	15 (15.5%)	32 (28.8%)