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| Study | Laser | TURP | p‐value |
| Anson | 7.5 | 0 | < 0.02 |
| Costello | 12.5 | 0 | NS |
| Cowles | 10.9 | 0 | < 0.01 |
| Donovan | NA | NA | |
| Gujral | 8.3 | 0 | NS |
| Kabalin | 20.0 | 0 | NS |
| Sengor | NA | NA | |
| Suvakovic (Non‐contact) | NA | NA | |
| Gilling | 1.9 | 8.2 | NS |
| Mottet | 8.3 | 0 | NS |
| Keoghane | 11.3 | 0 | < 0.01 |
| Shingleton | NA | NA | |
| Suvakovic (Contact) | NA | NA | |
| Tukhanen (Contact) | 0 | 0 | NS |
| Zorn | 0 | 0 | NS |
| Carter | 2.4 | 1.2 | NS |
| Suvakovic (Hybrid) | NA | NA | |
| Tukhanen (Hybrid) | 0 | 0 | NS |
| Zorn (Hybrid) | 0 | 0 | NS |
