Effect of Japanese Herbal Kampo Medicine Goreisan on Reoperation Rates after Burr-Hole Surgery for Chronic Subdural Hematoma: Analysis of a National Inpatient Database

Table 2

Reoperation rates and total hospitalization costs in Goreisan users versus nonusers in propensity-matched groups.

	Goreisan users	Goreisan nonusers
	(,879)	(,879)
Reoperation, (%)	187 (4.8)	241 (6.2)	0.001
Total hospitalization costs ($), mean (SD)	6,428 (4,646)	6,707 (6,567)	0.030

SD, standard deviation.