Table 5.

Multivariate linear regression outcomes with dependent variable sputum supernatant gal-3 levels

Variable	Coefficient	SE	P	95% confidence interval
Age	-0.002	0.004	0.686	-0.010 to 0.007
Sex	-0.022	0.094	0.813	-0.212 to 0.167
BMI	-0.201	0.007	0.007	-0.035 to -0.006
Bronchial epithelial cells, %	0.019	0.009	0.041	0.008 to 0.037
Ever smoked	0.210	0.102	0.042	0.008 to 0.413
Il-1β pg/mL	-3.8×10-5	8.0×10-6	<0.001	-5.8×10-5 to -2.2×10-5
Constant	3.114	0.385	<0.001	2.347 to 3.882

BMI: Body Mass Index; IL-1β: interleukin 1β.