Characteristics | Total (N=55) | Control (N=20) | Advice (N=18) | Advice + Gift Card (N=17) |
---|---|---|---|---|
Median (IQR) or N (%) | ||||
Age (y) | 30.9 (25.6, 33.8) | 32.4 (27.7, 34.3) | 32.6 (27.9, 35.9) | 27.6 (24.5, 32.0) |
Gestational age (wks) | 16.1 (13.3, 20.7) | 19.1 (14.7, 21.0) | 15.2 (13.0, 18.6) | 16.4 (13.9, 21.0) |
Pre-pregnancy BMI (kg/m2) | 23.4 (21.1, 28.3) | 22.3 (21.1, 27.0) | 25.8 (22.8, 34.5) | 23.4 (20.7, 28.3) |
Single | 11 (20%) | 4 (20%) | 3 (17%) | 4 (24%) |
First pregnancy | 16 (29%) | 6 (30%) | 6 (35%) | 4 (22%) |
Race/ethnicity | Â | Â | Â | Â |
White | 27 (49%) | 9 (45%) | 9 (50%) | 9 (53%) |
Black | 6 (11%) | 2 (10%) | 2 (11%) | 2 (12%) |
Asian | 6 (11%) | 3 (15%) | 2 (11%) | 1 (6%) |
Hispanic/other | 16 (29%) | 6 (30%) | 5 (28%) | 5 (29%) |
Working full time | 22 (40%) | 7 (35%) | 6 (35%) | 9 (50%) |
Never smoker | 40 (73%) | 14 (70%) | 14 (78%) | 12 (71%) |
Supplements | Â | Â | Â | Â |
DHA from supplements, all (mg/day) | 0 (0, 200) | 0 (0, 160) | 0 (0, 200) | 0 (0, 180) |
DHA from supplements, takers* (mg/day) | 200 (200, 275) | 238 (200, 315) | 200 (200, 200) | 200 (180, 200) |
Diet | Â | Â | Â | Â |
Fish intake (g/day) | 11 (4, 23) | 10 (4, 18) | 15 (2, 37) | 10 (7, 23) |
DHA intake from fish (mg/day) | 41 (11, 113) | 40 (11, 63) | 75 (6, 203) | 40 (32, 111) |
DHA from diet > 200 mg/day (%) | 8 (15%) | 1 (5%) | 5 (28%) | 2 (12%) |
Total DHA diet + supplements (mg/day) | 113 (36, 238) | 62 (37, 203) | 200 (24, 356) | 116 (54, 235) |
Mercury intake from fish (mcg/day) | 0.6 (0.1, 2.0) | 0.3 (0.1, 2.1) | 0.7 (0.0, 1.8) | 0.6 (0.2, 1.5) |
Mercury intake (mcg/kg/day) | 0.01 (0.00, 0.03) | 0.01 (0.00, 0.03) | 0.01 (0.00, 0.03) | 0.01 (0.00, 0.02) |
Biomarkers | Â | Â | Â | Â |
Plasma DHA (% of total fatty acids) | 1.9 (1.5, 2.3) | 1.8 (1.5, 2.2) | 2.1 (1.8, 2.4) | 1.8 (1.6, 2.2) |
Whole blood mercury (mcg/L) | 1.0 (0.7, 1.7) | 1.1 (0.8, 1.5) | 0.9 (0.6, 2.0) | 0.9 (0.8, 1.9) |
Whole blood mercury > 3.5 mcg/L†(%) | 4 (7%) | 1 (5%) | 1 (6%) | 2 (12%) |