Characteristics of the participants
respiratory diseases, breathlessness, ADL impairment
RESPIRATORY DISEASE
The following characteristics of the participants were collected at the time of registration: age, sex, primary diagnosis, family composition, ADL, level of care required, implementation status of NPPV, implementation status of HOT, smoking history, and availability of social resources. The pulmonary ADL (P-ADL) was used as the ADL assessment scale. P-ADL was developed in Japan as a respiratory disease-specific ADL scale because the standard ADL scale does not accurately capture ADL impairment due to breathlessness in respiratory diseases [