Aspirin significantly reduced incidence of nonfatal myocardial infarction ( @ -LSB- @ % CI , @-@ @ -RSB- for aspirin vs @ -LSB- @ % CI , @-@ @ -RSB- for no aspirin ; HR , @ -LSB- @ % CI , @-@ @ -RSB- ; P = @ ) and transient ischemic attack ( @ -LSB- @ % CI , @-@ @ -RSB- for aspirin vs @ -LSB- @ % CI , @-@ @ -RSB- for no aspirin ; HR , @ -LSB- @ % CI , @-@ @ -RSB- ; P = @ ) , and significantly increased the risk of extracranial hemorrhage requiring transfusion or hospitalization ( @ -LSB- @ % CI , @-@ @ -RSB- for aspirin vs @ -LSB- @ % CI , @-@ @ -RSB- for no aspirin ; HR , @ -LSB- @ % CI , @-@ @ -RSB- ; P = @ ) .