Table 4

Correlation between the different markers on days 3 and 7 of asthma exacerbation

	Asthma score (parent recorded)	Cough score (child recorded)	Cough score (parent recorded)	Child's QOL	Parents' QOL	IL-8	Sputum ECP
Results expressed as Spearman correlation (two tailed p value).
Day 3
Asthma score	0.86	0.62	0.64	0.33	−0.25	−0.58	−0.25
(child recorded)	(0.001)	(0.06)	(0.03)	(0.39)	(0.57)	(0.13)	(0.55)

Asthma score		0.41	0.55	0.3	−0.14	−0.69	−0.24
(parent recorded)		(0.23)	(0.08)	(0.43)	(0.74)	(0.06)	(0.57)

Cough score			0.89	0.07	−0.26	0.03	−0.42
(child recorded)			(0.001)	(0.39)	(0.57)	(0.95)	(0.3)

Cough score				0.24	−0.26	−0.06	−0.07
(parent recorded)				(0.53)	(0.53)	(0.9)	(0.87)

Child's QOL					0.24	−0.43	−0.37
					(0.57)	(0.4)	(0.47)

Parents' QOL						−0.8	−0.7
						(0.1)	(0.19)

IL-8							0.41
							(0.32)

Day 7
Asthma score	0.71	0.37	0.18	−0.09	0.55	−0.47	−0.45
(child recorded)	(0.01)	(0.06)	(0.61)	(0.79)	(0.67)	(0.28)	(0.23)

Asthma score		0.61	0.42	0.2	−0.33	−0.43	−0.49
(parent recorded)		(0.045)	(0.2)	(0.56)	(0.32)	(0.33)	(0.18)

Cough score			0.8	0.7	0.16	−0.03	−0.05
(child recorded)			(0.003)	(0.016)	(0.65)	(0.94)	(0.89)

Cough score						0	0.04
(parent recorded)						(1)	(0.91)

Child's QOL						0	0.84
						(1)	(0.005)

Parents' QOL						−0.14	0.01
						(0.76)	(0.98)

IL-8							0.89
							(0.007)