The association of the baseline dyspnoea index (BDI) and transition dyspnoea index focal scores with other respiratory outcome measures

	Total cohort		Native English countries		Nonnative English countries
	BDI	DD baseline	BDI	DD baseline	BDI	DD baseline
SGRQ symptom baseline	−0.35	0.34	−0.35	0.26	−0.34	0.35
SGRQ activity baseline	−0.63	0.44	−0.68	0.35	−0.61	0.46
SGRQ impact baseline	−0.59	0.36	−0.58	0.30	−0.60	0.40
SGRQ total baseline	−0.64	0.44	−0.65	0.36	−0.64	0.47
DD score baseline	−0.34		−0.34		−0.34
FEV₁ baseline	0.31	−0.26	0.32	−0.21	0.29	−0.26
FVC baseline	0.25	−0.18	0.21	−0.11	0.27	−0.19
PGE baseline	0.39	−0.46	0.39	−0.40	0.38	−0.48