Table 1.

Factors - nominal

Category	Factor	Value label	(n)	(%)
Demography	Gender	Female Male	72 97	42.6 57.4
Comorbidities	DM type 2	No Yes	147 22	87 13
	Hypertension	No Yes	76 93	45 55
	Primary diagnosis	Infarction	58	34.5
		SAB	26	15.5
		TBI	53	31.5
		ICB	31	18.5
Medication	Anticoagulation	No Yes	158 11	93.5 6.5
	Antiplatelets	No Yes	139 30	82.2 17.8
Intraoperative factors	Location of cranioplasty	Left Right Bifrontal	68 82 19	40.2 48.5 11.2
	Multiple fragments	No Yes	137 31	81.5 18.5
	Dural level	Below At level Above	58 33 59	38.7 22 39.3
	Intraoperative CSF withdrawal	No Yes	99 69	58.9 41.1
	Unintended dural opening	No Yes	91 77	54.2 45.8
	Wound drain	No 1 Day 2 Days	1 84 84	0.6 49.7 49.7
Laboratory values	CRP	≤ 0,5 mg/dl  > 0,5 mg/dl	88 60	59.5 40.5
	Leucocytes	≤ 10 × 109/l  > 10 × 109/l	136 24	85 15
Others	VP shunting before cranioplasty	No Yes	151 18	89.3 10.7
	VP shunting after cranioplasty	No Yes	152 17	89.9 10.1

n patient number, DM Diabetes mellitus, TBI Traumatic brain injury, SAB Subarachnoid haemorrhage, ICB Intracranial haemorrhage, VP Ventriculoperitoneal, CRP C-reactive protein