Baseline characteristics of patients in the National Heart, Lung, and Blood Institute Percutaneous Transluminal Coronary Angioplasty Registry.


The efficacy of PTCA was evaluated in several subgroups of patients. Of special clinical interest were the comparisons between subgroups of patients with multivessel disease vs 1-vessel disease, unstable angina vs stable angina, older age vs younger age, and female sex vs male sex. As a prerequisite for such comparisons, baseline characteristics of patients… (More)


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