Forest plot of the sensitivity of direct autoantibody testing (either anti-GPIIb/IIIa or anti-GPIb/IX). The sensitivity is reported from each study with 95% confidence intervals (solid lines); the pooled estimate (open diamond with dashed line) is also reported (J.R.V., J. Moore, D.M.A., J.G.K., I. Nazy, manuscript submitted, August 2018).