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 .
Surgical treatment of endometriosis: a prospective randomized double-blinded trial comparing excision and ablation.
OBJECTIVE To compare reduction of pain following laparoscopy after ablation or excision of endometriosis . DESIGN A prospect i ve , r and omized , double-blind study . SETTING Endometriosis and pelvic pain clinic at a university teaching hospital . PATIENT(S ) Women of reproductive age presenting with pelvic pain and visually proved endometriosis . INTERVENTION(S ) Subjects completed a question naire rating their various pains using visual analogue scales ( VASs ) . After visual identification subjects were assigned r and omly to treatment with ablation or excision by supervised training gynecologists as primary surgeon . Follow-up question naires at 3 , 6 , 9 , and 12 months documented pain levels . MAIN OUTCOME MEASURE(S ) Change in overall pain VAS score at 12 months after operation . RESULT ( S ) There was no significant difference in reduction in overall pain VAS scores at 12 months when comparing ablation and excision . CONCLUSION ( S ) This study has not been able to demonstrate a significant difference in pain reduction between ablation and excisional treatments . Nonsignificant trends suggest that a larger study may find a difference in outcomes looking at dyspareunia or dyschezia
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 .