Table 4.
Probabilities of semen analysis showing any motile sperm or 1 million sperm/mL or more by vasectomy occlusion technique, early recanalization status, and number of weeks after vasectomy.
| Week | Semen analysis with any motile sperm | Semen analysis with 1 × 106 sperm/mL or more | ||||||
| Vasectomy Technique | Vasectomy Technique | |||||||
| LE | LE and FI | ECa | TC and FIa | LE | LE and FI | ECb | TC and FIb | |
| n/N (%)c | n/N (%) | n/N (%) | n/N (%) | n/N (%) | n/N (%) | n/N (%) | n/N (%) | |
| Recanalization | ||||||||
| <5 | 45/105 (43) | 21/41(51) | 2/7 (29) | 0 | 24/105 (23) | 11/40 (28) | 4/15 (27) | 0 |
| 5–6 | 76/90 (84) | 26/37 (70) | 8/8 (100) | 0 | 66/90 (73) | 22/37 (59) | 8/13 (62) | 0 |
| 8–10 | 76/96 (79) | 29/38 (76) | 7/9 (78) | 0 | 61/96 (64) | 24/38 (63) | 8/17 (47) | 0 |
| 12–14 | 55/91 (60) | 19/38 (50) | 3/7 (43) | 0 | 41/91 (45) | 16/38 (42) | 1/11 (9) | 0 |
| 16–18 | 36/75 (48) | 12/27 (44) | 2/6 (33) | 0 | 21/75 (28) | 8/27 (30) | 2/12 (17) | 0 |
| 20–22 | 17/52 (33) | 8/20 (40) | 2/8 (25) | 0 | 13/52 (25) | 5/20 (25) | 2/11 (18) | 0 |
| 24–26 | 11/30 (37) | 6/12 (50) | 2/7 (28) | 0 | 6/30 (20) | 3/12 (25) | 2/12 (17) | 0 |
| No recanalization | ||||||||
| <5 | 87/300 (29) | 121/349 (35) | 29/85 (34) | 14/93 (15) | 75/300 (25) | 87/349 (25) | 46/170 (27) | 28/177 (16) |
| 5–6 | 39/245 (16) | 17/298 (6) | 13/79 (16) | 2/86 (2) | 19/245 (8) | 14/298 (5) | 15/153 (10) | 7/163 (4) |
| 8–10 | 12/236 (5) | 4/279 (1) | 3/82 (4) | 0/80 (0) | 9/236 (4) | 7/279 (3) | 3/154 (2) | 1/162 (1) |
| 12–14 | 8/170 (5) | 6/162 (4) | 0/81 (0) | 0/83 (0) | 8/170 (5) | 4/162 (2) | 0/155 (0) | 0/160 (0) |
| 16–18 | 5/94 (5) | 2/104 (2) | 0/89 (0) | 0/90 (0) | 4/94 (4) | 2/104 (2) | 0/154 (0) | 0/159 (0) |
| 20–22 | 3/57 (5) | 0/62 (0) | 0/91 (0) | 0/83 (0) | 4/57 (7) | 0/62 (0) | 0/151 (0) | 0/160 (0) |
| 24–26 | 4/41 (10) | 1/46 (2) | 0/91 (0) | 0/62 (0) | 4/41 (10) | 1/46 (2) | 0/127 (0) | 0/128 (0) |
FI = fascial interposition, LE = ligation and excision, EC = electrocautery, TC = thermal cautery
a restricted to the two centers in the cautery study that had information about motility.
b includes all centers in the cautery study.
c n/N (%) = the number of men with the outcome of interest (semen analysis with any motile sperm or with 1 × 106 sperm/mL or more) divided by the total number of men who provided a semen sample for a given vasectomy technique and early recanalization status for that time period.