***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: Seven RCTs (1205 patients) were included in the review. Stone-free rates were lower in patients who underwent ESWL (7 studies, 1205 participants: RR 0.84, 95% CI 0.73 to 0.96) but re-treatment rates were lower in ureteroscopy patients (6 studies, 1049 participants: RR 6.18, 95% CI 3.68 to 10.38. ESWL-treated patients had less need for auxiliary treatment (5 studies, 751 participants: RR 0.43, 95% CI 0.25 to 0.74; fewer complications (7 studies, 1205 participants: RR 0.54, 95% CI 0.33 to 0.88); and shorter length of hospital stay (2 studies, 198 participants: MD -2.55 days, 95% CI -3.24 to -1.86). Three studies adequately described the randomisation sequence, three studies were unclear on how they randomised, while one study had a high risk of selection bias. All the studies had an unclear risk of performance bias and detection bias, while all had a low risk of attrition bias, reporting bias, or other sources of bias identified. Compared with ESWL, ureteroscopic removal of ureteral stones achieves a greater stone-free state, but with a higher complication rate and longer hospital stay.
Output:

We analysed reports from seven randomised controlled trials of 1205 patients and found that ureteroscopy provided a better stone-free rate after treatment, but patients had to stay in hospital longer, and there was a higher risk of complications. We found that there were many variations among the seven studies in their design, duration, and data collected which made comparison and evaluation challenging. We recommend that further evaluation and research is conducted to ensure that new and improved treatments and studies are considered to inform clinical practice.