Early postoperative serum S100β levels predict ongoing brain damage after meningioma surgery: a prospective observational study

Table 1 Disease characteristics of the study population (n = 52)

Concomitant diseases		n	Percentage
Hypertension		16	31
Hyperlipidemia		15	29
Diabetes		8	15
Thyroid disorder		6	11
Other endocrine disorder		5	10
Chronic ischemic heart disease		5	10
Chronic obstructive pulmonary disease		5	10
Liver disease		3	6
Metabolic disorder		3	6
Meningioma
Family history of meningioma		6	11
Prior irradiation		16	31
Prior hormonal therapy		5	10
Recurrent disease		14	27
Tumour histology	Transitional	22	42
	Meningothelial	12	23
	Fibrous	4	8
	Atypical	3	6
	Other^a	11	21
WHO grading	1	48	92
	2	4	8

^aSecretory, transitional and fibrous, meningiomatous, inflammatory, choroids, metaplastic, and psammomatous. WHO, World Health Organization.