Fev1 As Percent Change From Predose In A Large 12-week Clinical Trial (Fev Figure)
This is a chart showing the percentage change in FEV (forced expiratory volume) from predose in a 12-week clinical trial. Three groups were tested - the first group used albuterol sulfate inhalation aerosol (2 puffs, four times daily, n=183), the second group used CFC 11/12 albuterol (2 puffs, four times daily, n=186), and the third group used HFA-134a placebo (2 puffs, four times daily, n=186). The x-axis shows the time in hours and the y-axis shows the percentage change in FEV.*