. Author manuscript; available in PMC: 2013 Jun 1.

Published in final edited form as: Pediatr Pulmonol. 2011 Dec 13;47(6):567–573. doi: 10.1002/ppul.21621

Table 3.

Correlations between lung disease surrogates and chest CT score

Measure	Pearson correlation coefficient	P-value
Wisconsin CXR score	0.83	<0.001
Brasfield CXR score	−0.81	<0.001
Culture positive for P. aeruginosa	0.23	0.04
Daily cough	0.31	0.004
Daily sputum production	0.41	<0.001
RV/TLC	0.53	<0.001
FEV₁/FVC	−0.47	<0.001
FEV₁ % predicted	−0.59	<0.001
FEF_25–75 % predicted	−0.52	<0.001