Table 5.

Correlation between number of respiratory medications and other parameters

	Unadjusted		Adjusted*
	Coefficient	p-value	Coefficient	p-value
Exacerbations per patient	0.426	<0.001	0.236	<0.001
Severe exacerbations per patient	0.287	<0.001	0.161	<0.001
Emphysema percentage	0.426	<0.001	0.036	0.183
Gas trapping percentage	0.471	<0.001	0.054	0.046
Subsegmental wall area (%)	0.258	<0.001	0.034	0.205
Pi10	0.250	<0.001	0.079	0.003

^*Adjusted for age, sex, pack-years, BMI, FEV1, and medication class.

Pearson correlation coefficients were used to evaluate the correlation between number of respiratory medications and numbers of exacerbations or CT metrics.

Pi10, 10 mm luminal perimeter.