Table 4. Spearman correlations construct validity.

T1	ACQ	VAS-all	VAS-low	VAS-up	VAS-low+up
CARAT total score	−0.66	−0.69	−0.62	−0.64	−0.76
CARAT domain allergic rhinitis	−0.41	−0.47	−0.41	−0.70	−0.66
CARAT domain asthma	−0.70	−0.68	−0.64	−0.44	−0.71

Abbreviations: ACQ, Asthma Control Questionnaire; CARAT, Control of Allergic Rhinitis and Asthma Test; VAS-all, Visual Analog Scale-all airway symptoms; VAS-low, Visual Analog Scale-lower airway symptoms; VAS-up, Visual Analog Scale-upper airway symptoms; VAS-low+up, Sum of VAS-low and VAS-up score.

All correlations were statistically significant (P<0.01). The a priori expected best correlations are shown in bold.