Table 4.
Predictors for postoperative patency and pregnancy
| First author | Year | Patient number | Surgical procedure | Patency rate (%) | Predictor | P‐value | Pregnancy rate (%) | Predictor | P‐value |
|---|---|---|---|---|---|---|---|---|---|
| Bolduc38 | 2007 | 747 | MVV | 86 | Type of ligature at the vasectomy | .006 | 53 | Identification of intraoperative motile sperm | .004 |
| Presence of a granuloma | .004 | Obstructive interval | .003 | ||||||
| Identification of intraoperative motile sperm | <.001 | Same female partner | .002 | ||||||
| Obstructive interval | .005 | Previous pregnancy | .020 | ||||||
| — | — | Postoperative semen α‐glucosidase | <.040 | ||||||
| Gerrard67 | 2007 | 294 | VV/VE | 89 | Obstructive interval | .019 | 54 | Obstructive interval | .025 |
| Presence of intraoperative sperm | .001 | Presence of intraoperative sperm | 0.033 | ||||||
| Hinz68 | 2008 | 212 | VV/VE | 93 | — | — | 72 | Partner's age | .014 |
| Silber score | .028 | ||||||||
| Hinz69 | 2009 | 351 | VV/VE | 93 | Presence of a granuloma | .029 | 62 | Silber score | .018 |
| Magheli70 | 2009 | 334 | VV/VE | 97 | — | — | 63 | Partner's age | .018 |
| Hinz71 | 2010 | 315 | VV/VE | 93 | — | — | 61 | Partner's age | .045 |
| Preoperative serum LH | .030 | ||||||||
| Hsiao72 | 2011 | 206 | — | — | — | — | 25 | Preoperative serum FSH | .010 |
| Peng41 | 2012 | 53 | MVE | 72 | Epididymal fullness | <.001 | 32 | — | — |
| Bilateral anastomosis | .024 | ||||||||
| Corpus anastomosis | .004 | ||||||||
| Motile sperm with flowing epididymal fluid | .022 | ||||||||
| Ostrowski73 | 2014 | 3315 | VV/VE | — | — | — | 60 | Same female partner | <.001 |
| Ramasamy74 | 2015 | 1331 | MVV | 98 | Identification of intraoperative motile sperm | <.001 | — | — | — |
| Clear gross fluid | .01 | ||||||||
| Surgeon's experience | .014 | ||||||||
| Majzoub75 | 2017 | 139 | MVV/MVE | — | — | — | 50 | Bilateral MVV | .001 |
| Presence of intraoperative sperm | .001 |
FSH, follicle‐stimulating hormone; LH, luteinizing hormone; MVE, microscopic vasoepididymostomy; MVV, microscopic vasovasostomy; VE, vasoepididymostomy; VV, vasovasostomy.