Atenolol versus bendroflumethiazide in middle-aged and elderly hypertensives. Acta Med Scand 1985; 218: 165-72.The antihypertensive effect and patient tolerability during 12 weeks' treatment with atenolol and bendroflumethiazide were evaluated in an open, randomized, between-patient trial. Out of a total of 162 patients, aged 50-75 years, with previously untreated hypertension, 151 completed the trial. They were randomly allocated to two groups. Forty-nine patients, aged 50-64 years (middle-aged), and 23, aged 65-75 years (elderly), were treated with atenolol. Forty middle-aged and 39 elderly were treated with bendroflumethiazide. Significant reductions in blood pressure (BP) were observed during treatment with each drug (p