Residential exposure to air pollution and access to neighborhood greenspace in relation to hair cortisol concentrations during the second and third trimester of pregnancy

Table 3 Spearman rank correlations between residential exposures in the 2nd trimester study population (n = 133)

	BC	NO₂	Distance to major road	Small greenspace	Large greenspace	Noise	ADI
PM2.5	0.68^*	0.68^*	−0.15	−0.02	−0.04	0.08	0.15
	BC	0.89^*	−0.29^*	−0.09	−0.14	0.28^*	0.38^*
		NO₂	−0.37^*	−0.08	−0.12	0.31^*	0.46^*
			Distance to major road	0.01	0.17	−0.32^*	−0.20^*
				Small greenspace	0.43^*	−0.14	− 0.11
					Large greenspace	−0.20^*	−0.18^*
						Noise	0.21

^*Significant correlations (p < 0.05)
Note: Air pollutants were modelled at the maternal home address, 3-month mean concentrations were calculated. Major roads include E- or N-roads. Access to small neighborhood greenspace is defined as access to > 0.2 ha (ha) of greenspace within a travel distance of 400 m (m) from residence, access to large neighborhood greenspace is defined as access to > 10 ha of greenspace within a travel distance of 800 m from residence. Noise exposure is evaluated as exposure above the WHO health-based guideline of 53 dB Lden (day–evening–night noise level). ADI Area deprivation index, NO₂ Nitrogen dioxide, PM_2.5 Fine particulate matter with an aerodynamic diameter ≤ 2.5 μm, BC Black carbon

ISSN: 1476-069X