title: Measuring the effectiveness of inhaled corticosteroids for COPD is not easy!
authors.forename: Jonathan M
authors.initials: JM
authors.lastname: Samet
mesh_terms: D000280:Administration, Inhalation; D000893:Anti-Inflammatory Agents / Q000008:administration & dosage*; D015982:Bias; D015331:Cohort Studies; D003627:Data Interpretation, Statistical; D019317:Evidence-Based Medicine; D006760:Hospitalization / Q000706:statistics & numerical data; D006801:Humans; D019370:Observation; D009864:Ontario / Q000453:epidemiology; D029424:Pulmonary Disease, Chronic Obstructive / Q000188:drug therapy* / Q000401:mortality; D012107:Research Design / Q000592:standards*; D012525:Saskatchewan / Q000453:epidemiology; D013256:Steroids; D016896:Treatment Outcome
chemical_list: D000893:Anti-Inflammatory Agents; D013256:Steroids