Table 4.
Model of the effect of birth weight on ASD symptoms on the A-TAC using Generalized Estimating Equations with Poisson Link Function (same-sex twins).
| Variable | PR (95% CI) | p-value |
|---|---|---|
| Birth Weight* | 0.98 (0.97, 0.98) | <0.0001 |
| Sex | <0.0001 | |
| Female | 0.68 (0.62, 0.75) | |
| Male | 1 [Reference] | |
| Zygosity | 0.1083 | |
| MZ | 0.94 (0.82, 1.08) | |
| DZ | 1.04 (0.92, 1.19) | |
| Unknown | 1 [Reference] | |
| Concordance | <0.0001 | |
| ASD Concordant | 22.93 (19.50, 26.96) | |
| ASD Discordant | 10.65 (9.77, 11.62) | |
| Non-ASD Concordant | 1 [Reference] |
PR=Prevalence Ratio; CI=Confidence Interval
*
100 gram change