Adjusted analysis for the model of birth weight, adjusted for exposure of PFOS, nutrition as measured by MNI and covariates, with an indicator for low and high fish consumption defined by an indicator variable (see figure 2; with cut-off at 0.35 times/week). Continuous variables were Z-scored for ease of interpretation. The scale is an estimate of root mean square error.
| Parameter | Estimate | SE | |
| P value | |||
| Intercept | 3679.13 | 40.73 | <0.001 |
| MNI_Z | 33.43 | 14.41 | 0.020 |
| logPFOS_Z | −120.50 | 34.79 | 0.001 |
| Fish sum indicator | 40.31 | 38.13 | 0.290 |
| logPFOS_Z*ish sum indicator | 71.63 | 37.66 | 0.057 |
| Female | −91.69 | 26.79 | 0.001 |
| Smoker | −29.13 | 42.14 | 0.489 |
| Weight_Z | 137.66 | 13.44 | <0.001 |
| Premature birth | −1048.37 | 70.49 | <0.001 |
| Mom education | 4.29 | 28.61 | 0.881 |
| Energy_Z | 18.48 | 13.74 | 0.179 |
| Scale | 480.94 | 9.44 |
MNI, My Nutrition Index; PFOS, perfluoro-octanesulfonic acid.