Figure 4.

Frequency of use of controller inhalers.

Notes: Supplementary material: Q36. Which statement best describes how you take your regular asthma treatment? This is your controller inhaler, which is usually brown, orange, red, purple, or pink; data on frequency of use are shown as percentage of respondents who use controller inhalers, n=1,072; those who correctly identified their inhalers, n=213, and those who incorrectly identified their inhalers, n=336. In all, 523 respondents could not identify their controller inhalers.