Secondary outcomes
A clinically significant between-group difference was
observed for symptoms of SGRQ 12 months after the beginning of the study. In addition, the score in the intervention group improved for all four domains of the SGRQ and the energy and emotional reaction domains of the NHP. The usual care group was also associated with statistically and clinically significant improvement in the activity dimension of the SGRQ. No effect was found for other domains of the NHP.