1. A total of 206 patients, elderly males with hypertension (diastolic blood pressure 95–110 mmHg) were followed for periods varying from 1 to 5 years, 107 patients with diastolic blood pressure <95 mmHg were followed over the same period, and 101 patients with diastolic blood pressure ≥110 mmHg were also followed.
2. The mortality of each group and the effect of therapy for hypertension on mortality has been compared.
3. The incidence of myocardial infarct in the group treated with thiazide diuretics is greater than in the other groups.
4. It would appear unlikely that therapy will improve the prognosis in elderly people with mild hypertension.