Table 3 Analysis of learning curve: comparison between TVT surgery and TOT surgery

surgical duration (min)

47.6 ± 19.1

32.8 ± 8.5

26.9 ± 4.3

0.0186

0.0888

blood loss (ml)

2.1 ± 8.0

0

0

0.5124

0.7721

catheterization (day)

2.9 ± 2.1

2.1 ± 0.3

2.0 ± 0

0.5281

0.4915

admission (day)

3.4 ± 0.8

3.1 ± 0.3

3.6 ± 1.4

0.7524

> .9999

POD1 post-voiding residue (ml)

46.3 ± 62.1

15.2 ± 20.5

34.0 ± 7.5

0.424

0.823

POM3 post-voiding residue (ml)

41.7 ± 68.7

31.5 ± 49.0

3.3 ± 5.8

0.384

0.233

subcutaneous hematoma

1 (6.7%)

1 (6.7%)

0

0.9565*

0.4214*

post-operative urinary retention

2 (13.3%)

1 (6.7%)

0

0.5859*

0.4214*

TOT surgery

Phase I (1-15 cases)

Phase II (16-30 cases)

Phase III (31-45 cases)

p Value (comparison between I and II)

p Value (comparison between II and III)

surgical duration (min)

33.2 ± 7.0

29.2 ± 6.4

30.7 ± 11.1

0.1266

0.9816

blood loss (ml)

1.4 ± 5.4

2.0 ± 7.8

6.2 ± 15.6

> .9999

0.7297

catheterization (day)

2.0 ± 0

2.0 ± 0

2.1 ± 0.3

0.5705

0.8538

admission (day)

3.1 ± 0.5

3.3 ± 0.8

3.3 ± 0.9

> .9999

0.6784

POD1 post-voiding residue (ml)

4.5 ± 15.0

12.9 ± 17.3

20.3 ± 26.8

0.135

0.423

POM3 post-voiding residue (ml)

10.4 ± 20.8

38.9 ± 67.0

29.0 ± 41.2

0.165

0.951

subcutaneous hematoma

0

0

1 (6.7%)

> .9999*

0.274*

post-operative urinary retention

0

0

0

> .9999*

> .9999*