Table 3.
Associations between DHA variables and 5-y body size and composition in linear regression models1
| Dependent variable | Independent variable | β | 95% CI | P value |
|---|---|---|---|---|
| Fat mass, kg | DHA group (vs. placebo)2 | 7.14 | –3.28, 17.6 | 0.18 |
| Maternal RBC PL DHA at Delivery (%)3 | 0.92 | –1.42, 3.27 | 0.44 | |
| Change in Maternal RBC PL DHA (%)3 | 1.02 | –1.22, 3.27 | 0.37 | |
| Fat-free mass, kg | DHA group (vs. placebo)2 | 4.14 | –0.29, 8.58 | 0.067 |
| Maternal RBC PL DHA at Delivery (%)3 | 1.00 | –0.00, 2.00 | 0.052 | |
| Change in Maternal RBC PL DHA (%)3 | 1.28 | 0.33, 2.23 | 0.0088 | |
| Body fat,6 % | DHA group (vs. placebo)2 | 0.25 | –1.56, 2.05 | 0.27 |
| Maternal RBC PL DHA at Delivery (%)3 | –0.08 | –0.48, 0.33 | 0.71 | |
| Change in Maternal RBC PL DHA (%)3 | –0.13 | –0.51, 0.26 | 0.53 | |
| Height, cm | DHA group (vs. placebo)4 | 0.65 | –0.64,1.95 | 0.32 |
| Maternal RBC PL DHA at delivery (%)5 | 0.17 | –0.12, 0.47 | 0.25 | |
| Change in maternal RBC PL DHA (%)5 | 0.24 | –0.04, 0.52 | 0.097 | |
| Weight, kg | DHA group (vs. placebo)4 | 3.29 | –0.97, 7.56 | 0.13 |
| Maternal RBC PL DHA at delivery (%)5 | 0.69 | –0.30, 1.67 | 0.17 | |
| Change in maternal RBC PL DHA (%)5 | 0.92 | –0.02, 1.86 | 0.055 | |
| BMI z score | DHA group (vs. placebo)5 | 0.21 | –0.09, 0.51 | 0.17 |
| Maternal RBC PL DHA at delivery (%)5 | 0.04 | –0.029, 0.11 | 0.26 | |
| Change in maternal RBC PL DHA (%)5 | 0.05 | –0.015, 0.12 | 0.13 |
1
The table presents the regression coefficient and 95% CI of prenatal DHA variables in a linear regression model including child sex and, for the first 3 dependent variables, age at body composition assessment by air displacement plethysmography (Bod Pod). Due to log transformation of weight, fat mass, and fat-free mass, the regression coefficients for these models represent percent increase. PL, phospholipid; RBC, red blood cell.
2
n = 154.
3
n = 149;
4
n = 171;
5
n = 166.
6
Regression coefficients for percentage of fat-free mass are the opposite of the percentage of body fat.