Treatment step down should be avoided at entry in COPD therapeutic trials.
Marchand
Eric
E
D000420:Albuterol / Q000031:analogs & derivatives / Q000627:therapeutic use; D000730:Androstadienes / Q000627:therapeutic use; D001993:Bronchodilator Agents / Q000627:therapeutic use; D002986:Clinical Trials as Topic; D004338:Drug Combinations; D000068297:Fluticasone-Salmeterol Drug Combination; D006801:Humans; D010352:Patient Dropouts; D029424:Pulmonary Disease, Chronic Obstructive / Q000188:drug therapy*; D012602:Scopolamine Derivatives / Q000627:therapeutic use; D000069447:Tiotropium Bromide
D000730:Androstadienes; D001993:Bronchodilator Agents; D004338:Drug Combinations; D000068297:Fluticasone-Salmeterol Drug Combination; D012602:Scopolamine Derivatives; D000420:Albuterol; D000069447:Tiotropium Bromide