Physicians were asked to diagnose "Angina of effort, of sufficient severity to interfere with the qualities of the patient's life". There is little doubt, on reviewing the record forms, that all cases represented true ischaemic angina and were not confused with cases of Da Costa's syndrome.
Dosage and Response Tillie:The nunuuum recommended dosage of oxprenolol was 120mg. daily (40mg. t.i.d.j, Physicians were asked to assess the optimum dosage until the maximum response was achieved. The dosage ranged from 120 to 480mg. daily with a mean dosage of 180mg. daily, and the distribution is illustrated in }<'ig, I.angina for more than 5 years and II % for more than 10 years; 33% of the patients gave a history of previous myocardial infarction. 56% of the group were being treated with trinitrin only, 32% with trinitrin and a longacting nitrate; 10% were being treated with a betahlocking drug, other than oxprenolol (usually with trinitrin additionally). 25% of the group had previously been treated with a heta-hlocking drug.In summary, this represents a typical cross-section of angina patients, well suited to provide clinical information on efficacy and tolerability of treatment.