Cost–utility analysis of an intervention designed to reduce the critical handling error of insufficient inspiratory effort
2018
Objectives
Up to 70–80% of patients use inhalers incorrectly. Dry-powder inhalers (DPIs) require forceful inhalation for optimal delivery, and approximately 40% of Global Initiative for Asthma (GINA)-defined Step-3+ patients inhale corticosteroid and long-acting beta-agonist through DPIs. The CRITIKAL study (Price et al. in J Allergy Clin Immunol Pract 5:1071-e9–1081-e9, 2017) found a statistically significant association between ‘insufficient inspiratory effort’ error and increased risk of uncontrolled asthma and hospitalisation-requiring exacerbations. This paper explores the cost-effectiveness of an error-targeted intervention.
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