TABLE 1.

Search terms

“chronic obstructive lung disease” or (“pulmonary” or “lung” or “airway” or “airflow” or “bronchopulmonary” or “respiratory” and (“disease” or “disorder”) and “chronic” and (“obstructive” or “obstruction”))

AND

“depression” or “depressive” and (“disorder” or “disease” or “patient” or “patients” or “syndrome” or “symptom” or “episode” or “illness”) or “depressive disorder” or “depression”

AND

“hospitalisation” or “rehospitalisation” or “exacerb*” or “aggravat*” or “flare” or “admission” or “readmission” or “readmitted”