[Retracted] Surgical Treatment of Bilateral Chronic Subdural Hematoma

Table 2

Comparison of surgical indexes between the two groups of patients.

Clinical data	Neuroendoscopy (n = 74)	Drilling drainage (n = 79)	t/X^2
Operation time (min)	49.76 ± 6.08	34.67 ± 5.23	16.490	0.000
Hospital stay (d)	14.65 ± 1.79	14.16 ± 1.83	1.673	0.097
Extubation time (d)	4.21 ± 0.85	5.76 ± 0.94	10.670	0.000
Misplacement of drainage tube	0 (0.00)	6 (7.59)	5.850	0.016
Recrudescence	1 (1.35)	7 (8.86)	4.348	0.037
Postoperative hematoma volume (mL)	21.64 ± 4.67	45.08 ± 6.72	24.900	0.000
Hematoma clearance rate	89.64 ± 7.18	74.95 ± 8.67	11.370	0.000
Markwalder	0.86 ± 0.09	0.83 ± 0.11	1.839	0.068