Chronic obstructive pulmonary disease and inhaled steroids alter surfactant protein D (SP-D) levels: a cross-sectional study

Table 2 Multivariable analysis among former smokers

Variables Included	Model Coefficient	p value
B₀	1342	0.07
COPD (vs. Healthy)	-539	0.04
ICS use	398	0.046
Age	-10	0.34
Sex	110	0.53
Race (African-American vs. White)	216	0.26
Tobacco (pack-years)	2.0	0.52

ISSN: 1465-993X