Beta  p-value  r2 Age 0.07 0.07 25% Gende r (male) -0.34 0.0001   Smoking pack/year Income 0.03 0.4  Education 0.08 0.04 FEV1/FVC -0.01 0.7 Anxiety 0.27 0.0001   0.06 0.1

Table 4: Perception of dyspnea in all subjects.