This study investigated burden of 'not well-controlled' asthma, overall and by Global Initiative for Asthma (GINA) Step, among treated asthma patients in Practice Fusion's research database. Asthma control (Asthma Control Test [ACT]) was stratified by GINA Step; prevalence ratios were estimated using Poisson regression with robust variance controlled for confounders. ACT scores ≤19 reflect not well-controlled; >19 reflect 'well-controlled' asthma. Of 15,579 patients, 30% had not well-controlled asthma at index date. The proportion of patients with not well-controlled asthma increased from GINA Step 1 (29%) to Step 5 (45%). Compared with Step 1, the proportion of patients with not well-controlled asthma was 0.87-times lower in Step 2, 1.10-times greater in Step 4, and 1.37-times greater in Step 5. Results suggest that despite available treatments, patients remain symptomatic across GINA Steps in real-world primary care and specialist outpatient practices, with incremental disease burden and unmet medical need in these populations.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10140050PMC
http://dx.doi.org/10.1038/s41533-023-00338-7DOI Listing

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