Stage

May 2009-June 2012

July 2012-May 2014

Total

Cases (n)

96

105

201

Age (years)

48 (29 - 71)

50 (31 - 71)

48 (29 - 71)

<60 years, n (%)

81 (84.38)

75 (71.43)

156 (77.61)

>60 years, n (%)

15 (15.63)

30 (28.57)

45 (22.39)

Body mass index

BMI > 30 (%)

3 (3.12)

20 (19.05)^*

23 (11.44)

BMI < 30 (%)

93 (96.88)

85 (80.95)

178 (88.56)

Operating time (hours)

4.27 ± 0.23

3.81 ± 0.84^*

4.05 ± 0.81

Blood loss (mL)

100 ± 61.80

65 ± 31.71^*

83.33 ± 52.88

Hospital days (day)

10.36 ± 2.56

8.10 ± 1.05^*

9.23 ± 1.76

Complication, n (%)

24 (25)

12 (11.43)^*

36 (17.91)

Inoperative complications, n (%)

4 (4.17)

1 (0.95)^*

5 (2.49)

Organ injury, n (%)

4 (4.17)

1 (0.95)

5 (2.49)

Postoperative complications, n (%)

20 (20.83)

11 (10.48)^*

31 (15.42)

Urinary retention, n (%)

15 (15.63)

8 (7.62)

23 (11.44)

Others, n (%)

5 (5.21)

3 (2.86)

8 (3.98)