Efficacy evaluation of neuroendoscopy vs burr hole drainage in the treatment of chronic subdural hematoma: An observational study

Table 2 Comparison of brain tissue 1/2 re-expansion by computed tomography at different time points after operation in chronic subdural hematoma patients

Group	n	Postoperative time in d
		1	3	12
Neuroendoscopy	61	25 (41)	42 (69)	60 (98)
Burr hole drainage	61	13 (21)	26 (43)	57 (93)
χ2		5.503	8.505	0.175
P		< 0.05	< 0.05	> 0.05

Data are presented as n (%), unless otherwise noted.