Unadjusted associations of diffusing capacity for carbon monoxide and respiratory symptom scores [<i>P</i> < 0.05 (*); <i>P</i><0.01 (**); <i>P</i> < 0.001 (***)].

Abstract

Unadjusted associations of diffusing capacity for carbon monoxide and respiratory symptom scores [P PP < 0.001 (***)].</p