RESULTS The instruments most frequently used were single-item VAS and Biberoglu and Behrman pain score , while multidimensional inventories were used in few studies .
The results of clinical studies in CPP are more frequently based on one-dimensional measurements .
RATIONALE Many types of  pain assessment are available to research ers carrying out clinical trials in chronic pelvic pain ( CPP ) , ranging from a single-item scale to multidimensional inventories .
AIM Our objective was to investigate which assessment s of pain are more commonly used in clinical trials on CPP .
Use of a levonorgestrel-releasing intrauterine device in the treatment of rectovaginal endometriosis.
OBJECTIVE To evaluate the effectiveness of a levonorgestrel-releasing IUD as therapy for endometriosis of the rectovaginal septum . DESIGN Prospect i ve therapeutic non-r and omized , self-controlled clinical trial analyzing changes in pain symptoms and size of lesions induced by the levonorgestrel-releasing IUD over 12 months . SETTING Tertiary referral center for treatment of deep endometriosis . PATIENT(S ) Eleven symptomatic patients with rectovaginal endometriosis . INTERVENTION(S ) A levonorgestrel-releasing IUD was inserted and maintained for 12 months . MAIN OUTCOME MEASURE(S ) Severity of dysmenorrhea , pelvic pain , and deep dyspareunia were assessed before insertion of the IUD and throughout treatment . The size of rectovaginal endometriotic lesions were evaluated by using transrectal and transvaginal ultrasonography . RESULT ( S ) Dysmenorrhea , pelvic pain , and deep dyspareunia greatly improved and the size of the endometriotic lesions was significantly reduced by treatment . CONCLUSION ( S ) Insertion of a levonorgestrel-releasing IUD alleviates pain and reduces the size of lesions in patients with endometriosis of the rectovaginal septum
RESULTS The instruments most frequently used were single-item VAS and Biberoglu and Behrman pain score , while multidimensional inventories were used in few studies .
The results of clinical studies in CPP are more frequently based on one-dimensional measurements .
RATIONALE Many types of  pain assessment are available to research ers carrying out clinical trials in chronic pelvic pain ( CPP ) , ranging from a single-item scale to multidimensional inventories .
AIM Our objective was to investigate which assessment s of pain are more commonly used in clinical trials on CPP .