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 .
Oral estroprogestins after laparoscopic surgery to excise endometriomas: continuous or cyclic administration? Results of a multicenter randomized study.
STUDY OBJECTIVE To evaluate continuous ( CON ) compared with cyclic ( CYC ) administration of combined oral estroprogestins for 6 months after laparoscopic excision of ovarian endometriomas associated with pain .  DESIGN Multicenter , prospect i ve , r and omized trial ( Canadian Task Force classification I ) . SETTING Tertiary care university hospitals . PATIENTS Fifty-seven women aged 18 to 40 years with ovarian endometriomas associated with moderate to severe pelvic pain who underwent laparoscopic excision of the disease . INTERVENTIONS Patients were r and omized to receive postoperative estroprogestins for 6 months , administered as either a CON or CYC regimen . MEASUREMENTS AND MAIN RESULTS At 3 , 6 , 12 , and 24 months postoperatively , patients were evaluated for recurrence of endometriomas ( defined as cysts > 3 cm in greatest diameter ) using ultrasonography , for recurrence of pain using a visual analog scale , and for patient satisfaction . After a minimum follow-up of 12 months ( mean , 22 months ) , at intent-to-treat analysis , no endometrioma recurrence was observed in the CON group , whereas there was recurrence in 1 patient ( 4 % ) in the CYC group . Pain recurred in 5 and 9 patients , respectively ( 17 % vs 32 % ; p = .23 ) . Compared with pretreatment values , pain scores improved in both groups , with no significant difference between the 2 groups . Most patients in both groups were either satisfied or very satisfied , with no significant difference between treatment groups . However , compared with the CYC group , significantly more patients in the CON group experienced moderate to severe adverse effects , and therapy was discontinued ( 41 % vs 14 % ; p = .03 ) . CONCLUSIONS Although both regimens were equally effective insofar as postoperative pain and recurrence of endometrioma , when compared with the CYC regimen , the CON regimen seems to be associated with significantly more adverse effects and discontinuation rates
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 .