operation
This benefit was significant but       small (absolute stroke risk reduction at 5 years, 6.5%; 22.2% vs 15.7%), and       thus, the authors of this study were tentative in the recommendation of operation       for these patients.
This benefit was significant but       small (absolute stroke risk reduction at 5 years, 6.5%; 22.2% vs 15.7%), and       thus, the authors of this study were tentative in the recommendation of  @SUBJECT$         @PREDICAT$  these  @OBJECT$ .