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 .
A randomized, double-blind crossover trial of sertraline in women with chronic pelvic pain.
The efficacy of antidepressants as analgesics for a range of chronic pain problems is well documented . However , a controlled trial of an antidepressant for women with chronic pelvic pain  has not yet been published . We r and omized 23 women from a general gynecology clinic to either double-blind sertraline or placebo . Measures of psychological function , pain , and functional disability were taken at baseline and 6 weeks . After a 2-week washout , the groups were crossed-over and the same measures were done over the next 6 weeks . There were no significant improvements in pain or functional disability noted on sertraline compared to placebo . Studies involving larger sample s of patients are needed to confirm these findings
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 .