Table 2

McCarthy Scale scores by exposure to NO₂ (n=210) in the cohort INMA-Granada, 2000-2006.

McCarthy scores (median)†	Exposure to NO₂ (μg/m³)
McCarthy scores (median)†	<15.40	15.40-24.75	>24.75	All
General cognitive	97.9	100.1	102.4*	100.5*
Perceptual-performance	98.4	100.9	102.2*	100.1*
Verbal	99.9	101.8	103.8	101.8
Memory	96.9	101.2	102.2	101.2
Quantitative	95.3	99.0	102.7	99.0
Motor	101.8	101.8	101.8	101.8*

↵* p-value≤0.05, in comparison to NO₂<15.40 μg/m³
↵† The mean score for the McCarthy scales is 100, with a standard deviation of 15. A higher score indicates a better performance.