Table 1.

Patient characteristics

Mean age (years)	56.7±16.6	55.6±12.8	59.2±15.3
Sex, male/female (n)	8/4	9/3	7/3
Height (cm)	162.1±8.0	162.2±10.3	159.8±9.4
Weight (kg)	60.9±10.3	66.3±9.9	62.8±12.2
Duration of surgery (hours)	172.9±54.4	172.3±26.8	178.0±47.1
Failed block (n)	1	1	2
Converted to open surgery (n)	0	0	1

Notes: Data are presented as means ± standard deviation. There were no statistically significant differences among these variables.