Researchers studying the effect of antibiotic treatment for acute sinusitis to one of two groups: treatment or control.
group - a factor with levels control and treatment
self.reported_improvement - a factor with levels no and yes
Source
J.M. Garbutt et al. Amoxicillin for Acute Rhinosinusitis: A Randomized Controlled Trial. In: JAMA: The Journal of the American Medical Association 307.7 (2012), pp. 685-692.
Use the following R code to directly access this dataset in R.