Long-term self-reported attendance in exercise training or lung choir and status of quality of life following initial pulmonary rehabilitation for COPD.

This was an observational follow-up, not a treatment test, so it cannot show that attending exercise or lung choir caused better quality of life. Only 160 of 196 living participants from the original study were included; 74 had died, 15 declined, and 21 were not reached. Three participants had missing attendance answers, so the attendance analysis used 157. Attendance and benefits were self-reported, and the study did not capture the type, quality, intensity, dose, or setting of exercise or lung choir. The follow-up was 56 months after the original assessment, with a range of 45 to 62 months, longer than many maintenance studies, which may increase recall bias. No structured maintenance programme was available locally, so current attendance reflected whatever was available rather than a defined intervention. People who did not complete initial pulmonary rehabilitation were already more challenged at baseline, including more smokers and worse quality of life, so later differences may reflect their starting point rather than completion alone.

The authors report financial support was received for the research, authorship, and/or publication. Funding came from The Danish Health Foundation.

Do not conclude that completing pulmonary rehabilitation or attending exercise or lung choir causes better quality of life four years later. The study was observational, attendance was self-reported, and non-completers were already more challenged at baseline, with more smoking and worse quality of life.