Table 2

Spearman’s correlation coefficients (for cross-sectional and longitudinal correlations) between SGRQ total and domain scores and UCSD-SOBQ, CASA-Q cough domain scores, EQ-5D VAS scores and FVC % predicted

SGRQ score	UCSD-SOBQ score		CASA-Q cough symptoms domain score		CASA-Q cough impacts domain score		EQ-5D VAS		FVC % predicted
SGRQ score	Baseline	Change from baseline at week 52	Baseline	Change from baseline at week 52	Baseline	Change from baseline at week 52	Baseline	Change from baseline at week 52	Baseline	Change from baseline at week 52
Total	0.83	0.61	−0.51	−0.43	−0.65	−0.59	−0.55	−0.41	−0.30	−0.34
Activity domain	0.82	0.57	−0.34	−0.29	−0.47	−0.41	−0.50	−0.34	−0.29	−0.30
Impact domain	0.76	0.53	−0.49	−0.38	−0.64	−0.55	−0.54	−0.38	−0.26	−0.28
Symptoms domain	0.56	0.35	−0.61	−0.45	−0.64	−0.49	−0.41	−0.25	−0.24	−0.23

P<0.0001 for all correlation coefficients.
CASA-Q, Cough and Sputum Assessment Questionnaire; EQ-5D VAS, EuroQol 5-Dimensional Quality of Life Questionnaire Visual Analogue Scale; FVC, forced vital capacity; SGRQ, St George’s Respiratory Questionnaire; UCSD-SOBQ, University of California San Diego Shortness of Breath Questionnaire.