Fig. 4
![Fig. 4](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12882-016-0368-6/MediaObjects/12882_2016_368_Fig4_HTML.gif)
a Sensitivity meta-analysis: stroke outcome by warfarin use, excluding studies with prevalent warfarin users. b Sensitivity meta-analysis: bleeding outcome by warfarin use, excluding studies with prevalent warfarin users. c Sensitivity meta-analysis: mortality by warfarin use, excluding studies with prevalent warfarin users