Table 3 Crude birth weight and birth weight at week 40 (grams) with 95% confidence intervals (CI) among referred women potentially exposed to endocrine disrupting chemicals (EDC), and among the internal and the external reference group
n | Median | Mean | 95% CI | Mean difference (95% CI) | |||
|---|---|---|---|---|---|---|---|
Exposed versus internal references | Exposed versus external references | ||||||
Birth weight | Exposed to EDC | 582 | 3,553 | 3,531 | 3,479–3,583 | –5.42 (–76,9 – 66,1) | 35.0 (−17,2 – 87,2) |
Internal reference | 620 | 3,500 | 3,537 | 3,487–3,586 | . | . | |
External reference | 346,544 | 3,500 | 3,496 | 3,494–3,499 | . | . | |
Birth weight at week 40 | Exposed to EDC | 117 | 3,580 | 3,566 | 3,462–3,671 | –3.2 (−141 – 136) | −21.5 (−126,4 – 83,5) |
Internal reference | 118 | 3,565 | 3,570 | 3,479–3,660 | . | . | |
External reference | 76,277 | 3,550 | 3,588 | 3,584–3,592 | . | . | |