BMC Pulmonary Medicine

Table 3 Correlation between deposition fractions and lung function

From: Altered deposition of inhaled nanoparticles in subjects with chronic obstructive pulmonary disease

		DF	DF	DF
		50 nm 1300 mL	50 nm 1800 mL	100 nm 1800 mL
FEV_1%pred	Pearson’s r	0.317^*	0.391^**	0.357^**
FEV_1%pred	p-value	0.028	0.0060	0.013
FEV₁/VC_%pred	Pearson’s r	0.452^**	0.530^***	0.574^***
FEV₁/VC_%pred	p-value	0.0013	0.00011	0.000020
DL_{,CO %pred}^†	Pearson’s r	0.494^***	0.571^***	0.518^***
DL_{,CO %pred}^†	p-value	0.00049	0.000034	0.00023

† n = 46, D_L,CO data for two subjects is missing
*Significance < 0.05 level
**Significance < 0.01 level
***Significance < 0.001 level
Pearson’s correlation coefficients, r, and p-values for the associations between particle deposition and clinical lung function tests for all subjects (n = 48)

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ISSN: 1471-2466

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