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 .
Leuprolide in a 3-monthly versus a monthly depot formulation for the treatment of symptomatic endometriosis: a pilot study.
An open-label r and omized pilot study was conducted to evaluate the efficacy and acceptability of 6 months treatment with leuprolide in a 3-monthly versus a monthly i.m . depot injection for the relief of chronic pelvic pain in women with endometriosis . A total of 30 women aged 18 - 38 years were allocated to the 3-monthly depot arm ( n = 15 ) or to the monthly depot arm ( n = 15 ) after laparoscopic diagnosis of pelvic endometriosis .  Mean ( SD ) deep dyspareunia scores according to a 0 - 3 point verbal rating scale decreased from 1.8 ( 0.9 ) at baseline to 1.3 ( 0.7 ) at the end of treatment in the 3-monthly depot group and from 2.1 ( 1.2 ) to 1.3 ( 0.7 ) in the monthly depot group . Corresponding values in non-menstrual pain scores fell from 2.1 ( 0.6 ) to 1.1 ( 0.3 ) , and from 2.1 ( 0.8 ) to 1.2 ( 0.4 ) respectively , without statistically significant differences between the groups . Serum luteinizing hormone ( LH ) and 17 beta-oestradiol concentrations were significantly suppressed at 12 and 24 weeks compared with baseline values , without differences between the groups . The monthly depot caused a slightly more marked inhibition of serum follicle stimulating hormone ( FSH ) levels with respect to the 3-monthly preparation . Mean ( SD ) endometriosis scores at baseline and at 6-month follow-up laparoscopy were respectively 32.8 ( 25.1 ) and 12.2 ( 9.3 ) in the 3-monthly depot group and 29.0 ( 22.7 ) and 13.1 ( 15.3 ) in the monthly depot group ( paired t-test , P < 0.05 ) . Mean percentage decrease in lumbar spine bone mineral density was 5.2 % in the former and 4.9 % in the latter subjects . In the 3-monthly depot group , 13 women grade d the tolerability of their treatment schedule as " good ' compared with seven in the monthly depot group ( chi 2 = 5.40 , P = 0.02 )
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 .