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Table 3 Frequency of presumed early recanalization following the consensus process, according to vasectomy occlusion technique and outcome in the fascial interposition trial and the cautery study.

From: Frequency and patterns of early recanalization after vasectomy

Vasectomy technique

Early recanalization

Vasectomy outcome

Total

  

Failurea n (%)

Successb n (%)

Indeterminatec n (%)

 

FI trial

     

LE

     
 

Yes

46 (87)

49 (15)

10 (31)

105 (25)

 

No

7 (13)

282 (85)

22 (69)

311 (75)

 

Total

53 (100)

331 (100)

32 (100)

416 (100)

LE and FI

     
 

Yes

20 (83)

20 (6)

1 (2)

41 (10)

 

No

4 (17)

323 (94)

42 (98)

369 (90)

 

Total

24 (100)

343 (100)

43 (100)

410 (100)

Cautery study

     

EC

     
 

Yes

2 (100)

13 (7)

2 (40)

17 (9)

 

No

0 (0)

177 (93)

3 (60)

180 (91)

 

Total

2 (100)

190 (100)

5 (100)

197 (100)

TC and FI

     
 

Yes

0 (0)

0 (0)

0 (0)

0 (0)

 

No

1 (100)

188 (100)

3 (100)

192 (100)

 

Total

1 (100)

188 (100)

3 (100)

192 (100)

  1. FI = fascial interposition, LE = ligation and excision, EC = electrocautery, TC = thermal cautery
  2. a FI trial definition: 5 million or more motile sperm/mL at 14+ weeks or 100,000 sperm or more/mL with any motility at 26+ weeks. Cautery study definition: Not meeting success definition by 24 weeks or having more than 10 million sperm/mL at 12+ weeks
  3. b FI trial definition: Two consecutive azoospermic specimens taken at least two weeks apart. Cautery study definition: Less than 100,000 sperm/mL in two consecutive specimens taken at least two weeks apart.
  4. c Neither a success nor a failure.