Change from baseline to follow-up | Control N=20 | Advice N=18 | Advice + Gift Card N=17 | Advice vs. Control | Advice + Gift Card vs. Control |
---|---|---|---|---|---|
Mean (SD) or % | P value* | ||||
Supplements | Â | Â | Â | Â | Â |
DHA from supplements (mg/day) | 10 (80) | 10 (52) | 34 (76) | 0.99 | 0.31 |
Diet | Â | Â | Â | Â | Â |
Fish intake (g/day) | 2 (17) | 14 (22) | 24 (36) | 0.15 | 0.01 |
DHA from fish (mg/day) | −12 (75) | 57 (114) | 149 (118) | 0.04 | <0.0001 |
DHA from fish + supplements (mg/day) | 2 (11) | 67 (130) | 183 (144) | 0.10 | <0.0001 |
Mercury intake from fish (mcg/day) | 0.4 (1.8) | −0.1 (2.1) | 0.9 (1.8) | 0.37 | 0.50 |
Mercury intake from fish (mcg/kg/day) | 0.007 (0.03) | −0.003 (0.02) | 0.012 (0.03) | 0.27 | 0.55 |
Biomarkers | Â | Â | Â | Â | Â |
Plasma DHA (% of total fatty acids) | 0.01 (0.45) | −0.12 (0.66) | −0.07 (0.29) | 0.03 | 0.52 |
Whole blood mercury (mcg/L) | 0.35 (1.12) | −0.26 (0.36) | −0.40 (1.27) | 0.67 | 0.22 |
Follow-up | Â | Â | Â | Â | Â |
Hair mercury (mcg/g) | 0.31 (0.31) | 0.25 (0.23) | 0.31 (0.30) | 0.50 | 0.99 |