Table 1.

Population characteristics and dietary acrylamide intake during pregnancy.

Characteristics of acrylamide intake	n (%)	β (95% CI)		p-Value
Mother’s age (years)	30.08 ± 4.51	0.026	(0.02, 0.04)	< 0.001
Parity
Nulliparous	26,320 (52.0)	Reference
Multiparous	24,331 (48.0)	0.170	(0.08, 0.26)	< 0.001
Prepregnancy BMI (kg/m2)
18.5–25	33,405 (66.0)	Reference
< 18.5	1,437 (2.8)	0.115	(–0.13, 0.36)	0.358
25–30	11,144 (22.0)	0.063	(–0.04, 0.16)	0.216
> 30	4,665 (9.2)	–0.082	(–0.22, 0.06)	0.263
Maternal education (years)
≤ 12	15,243 (30.1)	Reference
13–16	21,847 (43.1)	–0.205	(–0.30, –0.10)	< 0.001
≥ 17	12,539 (24.8)	–0.535	(–0.65, –0.42)	< 0.001
Missing	1,022 (2.0)	–0.513	(–0.81, –0.22)	0.001
Maternal smoking during pregnancy
Nonsmokers	46,420 (91.7)	Reference
Occasional smoking	2,261 (4.5)	1.181	(0.98, 1.38)	< 0.001
Daily smoking	1,970 (3.9)	1.486	(1.27, 1.71)	< 0.001
Father smoking during pregnancy
Nonsmokers	38,325 (75.7)	Reference
Occasional smoking	2,656 (5.2)	0.190	(0.01, 0.37)	0.041
Daily smoking	7,430 (14.7)	0.158	(0.03, 0.28)	0.011
Missing	2,240 (4.4)	0.104	(–0.10, 0.30)	0.310
Values are mean ± SD or n (%). Results are from multivariate linear regression model of energy-adjusted acrylamide intake (ng/kcal/day), adjusted simultaneously for all variables shown in the table.