***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 included no new trials in this update. The results are unchanged from the previous review and are based on the data of six RCTs with 223 participants. All six RCTs compared cognitive rehabilitation with a usual care control. Meta-analyses demonstrated no convincing effect of cognitive rehabilitation on subjective measures of attention either immediately after treatment (standardised mean difference (SMD) 0.53, 95% confidence interval (CI) –0.03 to 1.08; P = 0.06; 2 studies, 53 participants; very low-quality evidence) or at follow-up (SMD 0.16, 95% CI –0.23 to 0.56; P = 0.41; 2 studies, 99 participants; very low-quality evidence). People receiving cognitive rehabilitation (when compared with control) showed that measures of divided attention recorded immediately after treatment may improve (SMD 0.67, 95% CI 0.35 to 0.98; P < 0.0001; 4 studies, 165 participants; low-quality evidence), but it is uncertain that these effects persisted (SMD 0.36, 95% CI –0.04 to 0.76; P = 0.08; 2 studies, 99 participants; very low-quality evidence). There was no evidence for immediate or persistent effects of cognitive rehabilitation on alertness, selective attention, and sustained attention. There was no convincing evidence for immediate or long-term effects of cognitive rehabilitation for attentional problems on functional abilities, mood, and quality of life after stroke. The effectiveness of cognitive rehabilitation for attention deficits following stroke remains unconfirmed. The results suggest there may be an immediate effect after treatment on attentional abilities, but future studies need to assess what helps this effect persist and generalise to attentional skills in daily life. Trials also need to have higher methodological quality and better reporting.
Output:

We identified six studies that compared cognitive rehabilitation with a control group who received their usual care (but not cognitive rehabilitation) for people with attention problems following stroke. We did not consider listening to music, meditation, yoga, or mindfulness to be a form of cognitive rehabilitation. The six studies involved 223 participants who demonstrated attentional problems or reported having such problems following stroke. The evidence is current to February 2019. We found no evidence that cognitive rehabilitation improved general (global) measures of attention. The group that received cognitive rehabilitation performed better than the control group on tasks that required people to divide attention. However, this benefit was only seen immediately after the rehabilitation period with no suggestion that the benefits persist for longer. There was no evidence to suggest that cognitive rehabilitation was beneficial for other types of attention problems, or daily life activities, mood, or quality of life. More research is needed. The very low to moderate methodological quality of the studies identified, and the lack of studies means that we cannot draw firm conclusions about the effect of cognitive rehabilitation for attention following stroke.