Reliability and validity of a Dutch version of the Leicester Cough Questionnaire

Cough

Table 2 Concurrent validity

Validated outcome scales	LCQ physical	LCQ psychological	LCQ social	LCQ total
Borg cough scale	-0.37	-0.38	-0.36	-0.41
HADS anxiety	-0.41	-0.40	-0.33	-0.43
HADS depression	-0.36	-0.36	-0.38	-0.42
HADS total	-0.42	-0.42	-0.39	-0.46
SF-36 general health	0.54	0.28	0.30	0.41
SF-36 vitality	0.61	0.38	0.45	0.55
SF-36 mental	0.39	0.41	0.39	0.45
SF-36 pain	0.46	0.22	0.28	0.36
SF-36 emotional	0.35	0.32	0.16 (NS)	0.30
SF-36 physical	0.49	0.23	0.29	0.37
SF-36 social functioning	0.50	0.38	0.43	0.50
SF-36 physical functioning	0.50	0.24	0.34	0.40
SF-36 health changes	0.11 (NS)	0.22	0.22	0.22

Pearson's correlation coefficients between scores on validated questionnaires (Borg cough scale, SF-36, and HADS) and the domain scores and the total score of the LCQ. All correlation coefficients p < 0.05, unless otherwise described.