Table 4.

T-scores results for cognitive tests from exposure to PM from commuting on cognitive performance before and after exposure.

Test	Exposure time	mean	SD*	median	K-S* p-value	t-test p-value
MMSE	Pre-exposure	49.6	9.5	50	0.02	0.008
	Post-exposure	41.9	15.9	50
Stroop Word	Pre-exposure	44.6	12.4	45	0.031	0.391
	Post-exposure	47.1	12.2	48
Stroop Color	Pre-exposure	47.1	12.3	45	>0.15	0.794
	Post-exposure	46.8	10.8	45
Stroop Color-Word	Pre-exposure	55.9	14.4	55.9	>0.15	0.384
	Post-exposure	54.4	11.1	56
Stroop Interference	Pre-exposure	60.1	9.0	59	>0.15	0.473
	Post-exposure	59.1	7.3	57
Ruff 2 & 7 (Sustained attention-speed)	Pre-exposure	55.3	13.5	55	0.044	0.232
	Post-exposure	53.4	13.4	53
Ruff 2 & 7 (Sustained attention-accuracy)	Pre-exposure	51.1	6.6	53	0.035	0.530
	Post-exposure	50.2	8.0	53
Ruff 2 & 7 (Selective attention-ADS*)	Pre-exposure	56.2	13.2	54	>0.15	0.006
	Post-exposure	52.6	12.1	53
Ruff 2 & 7 (Selective attention-ADA*)	Pre-exposure	51.9	3.8	52	0.047	0.634
	Post-exposure	51.4	6.0	53
Ruff 2 & 7 (Selective attention-CSS*)	Pre-exposure	51.8	15.5	52	>0.15	0.300
	Post-exposure	50.3	15.2	50
Ruff 2 & 7 (Selective attention-CSA*)	Pre-exposure	50.3	10.6	53	0.090	0.591
	Post-exposure	49.2	11.5	52

*K-S: Kolmogorov-Smirnov; SD: standard deviation; ADS: Automatic detection speed; ADA: Automatic detection accuracy; CSS: Controlled search speed; CSA: Controlled search accuracy. Significantly robust t-test p-values are emboldened.