Randomised controlled factorial trial of dietary advice for patients with a single high blood pressure reading in primary care.

ABSTRACT:

Objective

To assess the effect of brief interventions during the "watchful waiting" period for hypertension.

Design

Factorial trial.

Setting

General practice.

Methods

296 patients with blood pressure > 160/90 mm Hg were randomised to eight groups defined by three factors: an information booklet; low sodium, high potassium salt; prompt sheets for high fruit, vegetable, fibre; and low fat.

Main outcome measures

Blood pressure (primary outcome); secondary outcomes of diet, weight, and dietary biomarkers (urinary sodium:potassium (Na:K) ratio; carotenoid concentrations).

Results

Blood pressure was not affected by the booklet (mean difference (diastolic blood pressure) at one month 0.2, 95% confidence interval 1.6 to 2.0), salt (0.13; 1.7 to 2.0), or p

SUBMITTER: Little P 

PROVIDER: S-EPMC403849 | biostudies-literature | 2004 May

REPOSITORIES: biostudies-literature