***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: We identified five RCTs involving 167 participants (mean age ranged from 54 to 72.5 years; sample size ranged from 19 to 60 participants). Overall, we found that the risk of bias in the included studies was high, and the quality of evidence for all outcomes was low. Pooled data from four studies demonstrated that preoperative exercise training reduced the risk of developing a postoperative pulmonary complication by 67% (risk ratio (RR) 0.33, 95% CI 0.17 to 0.61). The number of days patients in the exercise group needed an intercostal catheter was lower than in the non-exercise group (mean difference (MD) -3.33 days, 95% CI -5.35 to -1.30 days; two studies); postoperative length of hospital stay was also lower in the exercise group (MD -4.24 days, 95% CI -5.43 to -3.06 days; four studies). Pooled data from two studies demonstrated that compared to the non-exercise group, post-intervention 6-minute walk distance (MD 18.23 m, 95% CI 8.50 to 27.96 m), and post-intervention FVC (MD 2.97% predicted, 95% CI 1.78 to 4.16% predicted) were higher in the exercise group. Preoperative exercise training may reduce the risk of developing a postoperative pulmonary complication, the duration of intercostal catheter use, postoperative length of hospital stay, and improve both exercise capacity and FVC in people undergoing lung resection for NSCLC. The findings of this review should be interpreted with caution due to disparities between the studies, risk of bias, and small sample sizes. This review emphasises the need for larger RCTs.
Output:

The evidence is current to November 2016. This review included data from 167 participants (mean age ranged from 54 to 72.5 years) in five studies (sample size of the included studies ranged from 19 to 60 participants). Results from our review showed that compared to a control group that did not exercise before lung surgery, people with NSCLC who exercised before lung surgery had 67% less risk of developing a postoperative lung complication. Based on this result, we would expect that out of 100 people with NSCLC who exercise before lung surgery, seven will experience a postoperative lung complication, compared with 22 people with NSCLC who will experience a postoperative lung complication if they do not exercise before lung surgery. Also, compared to the control group, people with NSCLC who exercised before lung surgery had a chest drain for fewer days (three days less), had a shorter length of hospital stay (four days less), and better 6-minute walk distance (18 metres more), and lung function before surgery (3% better). The overall quality of evidence was low for all of the outcomes, mainly because of the small number of studies found, the small number of participants in the included studies, and limitations in the studies' methods.