Table 3 Spearman correlations between the estimated air pollutants in the 750 and 250 m geographical radii, and cord blood and maternal blood adducts.

	Buffers used to estimate the level of exposure (radius around households)
	750 m			250 m
Pollutant and source	MB Adducts	UCB Adducts	CMR	MB Adducts	UCB Adducts	CMR
Pollutant and source	ρ coefficient	ρ coefficient	ρ coefficient	ρ coefficient	ρ coefficient	ρ coefficient
PM10
Area sources	0.14#	0.17*	0.07	0.06	0.12	0.10
Point sources	0.13	0.19*	0.07	0.01	0.09	0.09
Mobile sources	−0.09	0.09	0.19*	−0.10	0.05	0.16*
Natural sources	−0.23**	−0.16*	0.03	−0.21**	−0.12	0.08
Overall emissions	0.10	0.19*	0.12	0.05	0.11	0.11
PM2.5
Area sources	−0.02	0.08	0.12	−0.08	−0.01	0.10
Point sources	0.12	0.18*	0.07	0.01	0.09	0.09
Mobile sources	−0.06	0.11	0.19*	−0.07	0.08	0.16*
Natural sources	−0.24**	−0.16*	0.04	−0.21**	−0.12	0.08
Overall emissions	0.01	0.14#	0.15*	−0.04	0.05	0.13
VOC
Area sources	−0.07	0.02	0.07	−0.04	−0.03	0.01
Point sources	0.10	0.16*	0.07	0.06	0.11	0.06
Mobile sources	−0.12	0.05	0.19*	−0.13	−0.00	0.13#
Natural sources	−0.23**	−0.15*	0.09	−0.19*	−0.12	0.06
Overall emissions	−0.02	0.08	0.11	−0.04	0.01	0.07
TOX
Area sources	−0.06	0.03	0.08	−0.03	−0.02	0.01
Point sources	−0.02	0.09	0.07	−0.03	0.04	0.05
Mobile sources	−0.07	0.07	0.17*	−0.08	0.02	0.12
Natural sources	−0.23**	−0.14#	0.11	−0.18*	−0.10	0.07
Overall emissions	−0.06	0.06	0.12	−0.06	−0.02	0.03
TOC
Area sources	−0.04	0.03	0.06	−0.02	−0.00	0.01
Point sources	0.08	0.17*	0.08	0.04	0.12	0.07
Mobile sources	−0.13	0.04	0.19*	−0.15*	−0.02	0.13#
Natural sources	−0.23**	−0.15*	0.09	−0.19*	−0.12	0.06
Overall emissions	−0.01	0.08	0.10	−0.02	0.04	0.07

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