Adjusted prevalence ratios^* (95% confidence interval) for use of prescription medications used to treat chronic obstructive pulmonary disease among 770 adults aged ≥20 years with self-reported chronic obstructive pulmonary disease, National Health and Nutrition Examination Survey 2005–20

*Prevalence ratios are adjusted for all variables shown in table. †Albuterol, fenolterol, levalbuterol, metaprotenerol, pirbuterol, terbutaline, ipratropium. ‡Salmetrol, formoterol, arformoterol. §Beclomethasone, budenoside, flunisolide, fluticasone, triamcinolone.