PLAT and myocardial infarction: According to the subgroup analysis, the association between high RPR and mortality became non-significant in the subgroups with the IV-tPA use, the endovascular therapy use, and myocardial infarction, however, this association remained significant in the AIS patients without the use of IV-tPA, without the use of endovascular treatment, and without myocardial infarction.