Figure 1. A. Association of current
(past 30-day) usage of airway clearance methods with gender. Filled
circles indicate the odds ratio for females using the indicated methods
for airway clearance. Gray lines are 95% confidence intervals; the
lower confidence interval for manual CPT is truncated. The number of
respondents reporting use of each method is indicated. B.Current age of patients using different airway clearance methods. There
were no significant differences in age between airway clearance methods.