LAUSR

The Asthma Control Questionnaire (ACQ) is a validated tool commonly used to assess therapeutic efficacy in asthma clinical trials, as it is responsive to changes in asthma control [1]. However, it depends on accurate recall since patients are asked about their symptoms, activities and rescue medication use over the previous week. Even if patients can accurately remember this period, this also means that data are averaged. Guidelines recommend that patients with asthma are trained to keep track of their symptoms (e.g. using a diary [2]) and clinical trials often require patients to complete a diary twice daily.