Table 3.

Adjusted mean (SE) mean arterial pressure (MAP) for the third trimester of pregnancy, according to U-Cd tertiles after stratification by micronutrients daily intake, Seattle and Tacoma, WA, 1996–2002

	Calcium		Magnesium		Zinc		Selenium
U-Cd tertiles (μg/g Cr)	Adjusted Mean (SE)	Mean difference (95% CI)	Adjusted Mean (SE)	Mean difference (95% CI)	Adjusted Mean (SE)	Mean difference (95% CI)	Adjusted Mean (SE)	Mean difference (95% CI)
Low micronutrient intake (mg/day)1
≤0.21	86.2 ± 0.6	0.0 (Reference)	86.1±0.7	0.0 (Reference)	86.33 ± 0.63	0.0 (Reference)	85.65 ± 0.63	0.0 (Reference)
0.22–0.41	85.7 ± 0.7	−0.26 (−2.2, 1.68)	86.0 ± 0.7	0.1 (−1.87, 2.07)	84.94 ± 0.68	1.4 (−3.28, 0.47)	85.6 ± 0.66	−0.03 (−1.9, 1.8)
≥0.42	84.8 ± 0.65	−1.3 (−3.12, 0.51)	84.9 ± 0.65	−0.9 (−2.8, 0.96)	84.89 ± 0.67	−1.20 (−3.04, 0.64)	84.9 ± 0.65	−0.42 (−2.23, 1.40)
High micronutrient intake (mg/day)2
≤0.21	86.9 ± 0.65	0.0 (Reference)	87.0±0.6	0.0 (Reference)	86.7 ± 0.64	0.0 (Reference)	87.4 ± 0.64	0.0 (Reference)
0.22–0.41	85.8 ± 0.64	−1.2 (−3.1, 0.6)	85.5 ± 0.6	−1.6 (−3.3, 0.22)	86.4 ± 0.65	−0.37 (−2.2, 1.46)	85.9 ± 0.67	−1.42 (−3.3, 0.44)
≥0.42	84.01 ± 0.74	−2.5 (−4.5, −0.5)a	83.9 ± 0.7	−2.98 (−4.9, −1.04)b	84.04 ± 0.70	−2.63 (−4.5, −0.7)c	83.9 ± 0.72	−3.6 (−5.5, −1.60)d

¹Adjusted for maternal age, race/ethnicity, parity, smoking, prenatal vitamin use family history of hypertension, GDM case, calories intake and physical activity for women with low micronutrients daily intake as follows: calcium (≤1100 mg, N=280); magnesium (≤276 mg, N=281); zinc (≤11 mg, N=259) and selenium (≤99 mg; N=286).

²Adjusted for maternal age, race/ethnicity, parity, smoking, prenatal vitamin use, family history of hypertension, GDM case, calories intake and physical activity for women with micronutrient high intake: calcium (>1100 mg, N=269); magnesium (>276 mg, N=268); zinc (>11 mg, N=290) and selenium (>99 mg; N=263).

^aP-value= 0.013

^bP-value=0.003

^cP-value=0.008

^dP-value<0.001