| Primary Research Focus |
In this RCT pilot study, "DASH for Asthma", we sought to examine the potential efficacy of a behavioural intervention promoting Dietary Approaches to Stop Hypertension (DASH) to improve asthma control in adults with uncontrolled asthma and to determine whether a full-scale trial would be warranted according to a priori decision rules. The main study aims were to estimate the 95% confidence intervals of the net-of-control effects of the DASH behavioural intervention on the primary outcome, change in asthma control measured by the Juniper Asthma Control Questionnaire (ACQ) [10], and on secondary outcomes including specific manifestations of asthma indicative of current impairment (e.g. lung function, symptoms and rescue medication use) and future risk (e.g. asthma exacerbations). In addition, changes in DASH concordance index, adherence to the primary DASH daily goals, and changes in weight, blood pressure and lipids were assessed. |