Table 4.

Results of multiple regression analysis of determinants of exposure (based on lognormal transformed metabolite levels in nmol/g creatinine)

		Total DM (eβ)3	Total DE (eβ)3	Total DAP (eβ)3
Combination of determinants1
Between-person variance		0.1507 (7.5%)	0.1269 (9.4%)	0.1171 (11.5%)
Within-person variance		0.4976 (−0.6%)	0.5928 (0.1%)	0.4002 (−0.3%)
Intercept		151.4****	27.7****	193.8****
Ethnicity2	Dutch	1.49***	1.11	1.34*
	European	1.55*	1.11	1.36
	Other	Ref	Ref	Ref
Education2	Primary	0.99	0.86	0.99
	Secondary	0.84	0.86	0.83*
	Higher	Ref	Ref	Ref
Smoking during pregnancy	Until known	0.69	0.76	0.72
	Continued	0.70*	0.55***	0.67**
	Never	Ref	Ref	Ref
Work status2	Paid work	0.91	1.09	0.92
	Self-employed	0.59 *	0.97	0.65*
	Other	Ref	Ref	Ref
Working with pesticides	Don’t know	1.91	2.98*	1.94
	Yes	0.84	1.28	0.92
	No	Ref	Ref	Ref
Age mother2 <30 years		1.05	1.09	1.07
	30–35 years	1.12	1.09	1.12
>35 years		Ref	Ref	Ref
Potatoes(g/day)		0.998	0.998	0.998
Vegetables(g/day)		0.999	0.999	0.999
Legumes(g/day)		1.013	1.001	1.011
Fruits(g/day)		1.001	1.002***	1.001*

¹Based on part of the dataset with complete data, 241 (out of 318) measurements for 91 (out of 120) women

²Based on combination of categories, to limit the number of categories within each parameter in the determinant analysis and have a relevant number of individuals in each category

³Between brackets the percentage of explained between- and within-person variability. Please note that the exponentiated coefficients (e^β) are presented here, as the analysis was performed on lognormal transformed data.

Ref: reference category

^****p<0.0001,

^***0.0001<p<0.05,

^**0.05<p<0.10,

^*0.10<p<0.20