Characteristics

Group 1

(N = 30)

Group 2

(N = 30)

Mean difference

Females, N (%)

5 (16)

3 (11)

0

Age (yr), mean ± SD

49 ± 3

53 ± 5

4

Body weight (kg), mean ± SD

59 ± 6

57 ± 7

2

Surgery time (min), mean ± SD

108.06 ± 9.081

104.6 ± 9.185

4.4

Maintenance time (min), mean ± SD

82.83 ± 7.4

82 ± 7.14

0.83