Conclusions Piracetam plays a limited role in the rehabilitation of overall language impairment and only benefits written language ability at the end of trials .
Its effect on overall linguistic level and written language tends to emerge within a short period and declines thereafter
Background Aphasia is a common symptom in post-stroke patients .
Piracetam is a commonly used nootropic agent that promises various benefits to brain function , including language improvement .
Objective We performed a systematic review and meta- analysis to assess whether piracetam facilitates the rehabilitation of language performance in post-stroke patients .
Retrieving randomized controlled trials from medline: a comparison of 38 published search filters.
BACKGROUND People search medline for trials of healthcare interventions for clinical decisions , or to produce systematic review s , practice guidelines , or technology assessment s. Finding all relevant r and omized controlled trials ( RCTs ) with little extraneous material is challenging . OBJECTIVE To provide comparative data on the operating characteristics of search filters design ed to retrieve RCTs from medline . METHODS We identified 38 filters . The testing data base comprises h and search ing data from 161 clinical journals indexed in medline .  Sensitivity , specificity and precision were calculated . RESULTS The number of terms and operating characteristics varied considerably . Comparing the retrieval against the single term ' r and omized controlled trials.pt . ' ( sensitivity for retrieving RCTs , 93.7 % ) , 24 of 38 filters had statistically higher sensitivity ; 6 had a sensitivity of at least 99.0 % . Four other filters had specificities ( non retrieval of non- RCTs ) that were statistically not different or better than the single term ( 97.6 % ) . Precision was poor : only two filters had precision ( proportion of retrieved articles that were RCTs ) statistically similar to that of the single term (56.4%)-all others were lower . Filters with more search terms often had lower specificity , especially at high sensitivities . CONCLUSION Many RCT filters exist ( n = 38 ) . These comparative data can direct the choice of an RCT filter
Conclusions Piracetam plays a limited role in the rehabilitation of overall language impairment and only benefits written language ability at the end of trials .
Its effect on overall linguistic level and written language tends to emerge within a short period and declines thereafter
Background Aphasia is a common symptom in post-stroke patients .
Piracetam is a commonly used nootropic agent that promises various benefits to brain function , including language improvement .
Objective We performed a systematic review and meta- analysis to assess whether piracetam facilitates the rehabilitation of language performance in post-stroke patients .