***TASK***
the task is to simplify the input abstract of a biomedical literature

***INPUT***
the input is the abstract of a biomedical literature

***OUTPUT***
the output is the simplified abstract for the input abstract of a biomedical literature

***DOCUMENTATION***

***EXAMPLES***

Input: As a group, NSAIDs were more effective than placebo at reducing HMB but less effective than tranexamic acid, danazol or the levonorgestrel-releasing intrauterine system (LNG IUS). Treatment with danazol caused a shorter duration of menstruation and more adverse events than NSAIDs, but this did not appear to affect the acceptability of treatment, based on trials from 1980 to 1990. However, currently danazol is not a usual or recommended treatment for HMB. There was no clear evidence of difference between NSAIDs and the other treatments (oral luteal progestogen, ethamsylate, an older progesterone-releasing intrauterine system and the oral contraceptive pill (OCP), but most studies were underpowered. There was no evidence of a difference between the individual NSAIDs (naproxen and mefenamic acid) in reducing HMB. The evidence quality ranged from low to moderate, the main limitations being risk of bias and imprecision. NSAIDs reduce HMB when compared with placebo, but are less effective than tranexamic acid, danazol or LNG IUS. However, adverse events are more severe with danazol therapy. In the limited number of small studies suitable for evaluation, there was no clear evidence of a difference in efficacy between NSAIDs and other medical treatments such as oral luteal progestogen, ethamsylate, OCP or the older progesterone-releasing intrauterine system.
Output:

Authors search medical databases and identified 19 randomised controlled trials (RCTs; clinical studies where people are randomly put into one of two or more treatment groups) with 759 women that could be included in the review, but data from only nine trials were suitable for analyses. Women sought help for HMB when it affected their quality of life. Levels of prostaglandin (a naturally occurring hormone) are higher in women with HMB and are reduced by NSAIDs. The review of trials found that NSAIDs were modestly effective in reducing HMB, but other medicines, such as danazol, tranexamic acid and levonorgestrel-releasing intrauterine system (LNG IUS), are more effective. These results were based on a small number of low- to moderate-quality trials. The evidence quality ranged from low to moderate, the main limitations being poor reporting of study methods and imprecision resulting from small study numbers.