Transobturator tension-free suburethral tape made of polyvinylidene fluoride.

Transobturator tension-free suburethral tape made of polypropylene.

Percentage of patients who are regarded as cured or improved one-year after surgery with both techniques based on the following criteria:

• CURED: negative cough stress test and patient must be fully satisfied with the operation (no leaks, no voiding dysfunction, and no use of urinary protection); Patient Global Impresison of Improvement (PGI-I) scale must be "Very much better".
• IMPROVED: cough stress test had to be negative and the patient moderately satisfied with the result of surgery due to an increase in urinary frequency and/or sporadic urgency episodes; PGI-I must be "Much better" or "A little better".

Comparison of the intra- and postoperative complications between both procedures.

Change in the punctuation of the following questionnaires comparing before surgery and one year after operation:

• International consultation on Incontinence Urinary Questionnaire-Short Form (ICIQ-SF).
• Sandvik severity index.