Papi A, Ferreira DS, Agache I, et al. European Respiratory Society short guidelines for the use of as-needed ICS/formoterol in mild asthma. Eur Respir J 2023; 62: 2300047.
Guyatt GH, Oxman AD, Kunz R, et al. GRADE guidelines: 2. Framing the question and deciding on important outcomes. J Clin Epidemiol 2011; 64: 395–400.
Nwaru BI, Ekström M, Hasvold P, et al. Overuse of short-acting β2-agonists in asthma is associated with increased risk of exacerbation and mortality: a nationwide cohort study of the global SABINA programme. Eur Respir J 2020; 55: 1901872.
Royal College of Physicians. Why Asthma Still Kills: The National Review of Asthma Deaths (NRAD). London, Healthcare Quality Improvement Partnership, 2014.
Guyatt GH, Oxman AD, Sultan S, et al. GRADE guidelines: 11. Making an overall rating of confidence in effect estimates for a single outcome and for all outcomes. J Clin Epidemiol 2013; 66: 151–157.
Cates C. Simpson’s paradox and calculation of number needed to treat from meta-analysis. BMC Med Res Methodol 2002; 2: 1.
Altman DJ, Deeks JJ. Meta-analysis, Simpson’s paradox, and the number needed to treat. BMC Med Res Methodol 2002; 2: 3.
