Maximum values

Minimum values

Average values

Variances

Number of cases whose hematoma volumes increased

Treatment group

The first time

55

1

14.3 ± 13.4 *

182

(n = 51)

The second time

55

0

12.49 ± 14.7Δ

216.8

4▲

Control group

The first time

48

2

18.2 ± 12.8

163.8

(n = 30)

The second time

88.5

2

28.43 ± 20.91

356.4

22