RESULTS	We compared outcomes of patients with ( n = 690 ) and those without ( n = 320 ) unstable angina in the Coronary Angioplasty Versus Excisional Atherectomy Trial ( CAVEAT-I ) by unstable angina subgroup : rest chest pain , postinfarction chest pain , chest pain with ischemic electrocardiographic changes , chest pain with recent acceleration , and no chest pain .\