Fig. 1

Confirmatory factor analysis for Dyspnoea-12 and Multidimensional Dyspnea Profile. Confirmatory factor analysis for the two-factor structure of Dyspnoea-12 and Multidimensional Dyspnea Profile, respectively. Estimate corresponds to the factor loading of each item and a higher factor loading means the item relates more to it’s given subdomain compared to a lower factor loading. Error variance corresponds to how much of the variance in each item is not covary with the given domain. All values are standardized. D12 Dyspnoea-12, MDP Multidimensional Dyspnea Profile