Table 1.
Prenatal Cortisol and Maternal Characteristics
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|---|---|---|---|---|---|---|
| Cross-Sectional Differences in Prenatal Cortisol Levels | Within Family Differences in Prenatal Cortisol Levels | |||||
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| Normal | High | % Difference | Normal | High | % Difference | |
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| Black | 0.08 | 0.17 | 113% | 0.10 | 0.10 | 0% |
| Single during pregnancy | 0.05 | 0.08 | 60% | 0.04 | 0.08 | 85% |
| Single at age 7 | 0.12 | 0.15 | 25% | 0.13 | 0.17 | 28% |
| Income at birth | $ 26,800 | $ 21,147 | −21% | $ 26,570 | $ 22,105 | −17% |
| Income at age 7 | $ 36,800 | $ 30,300 | −18% | $ 35,850 | $ 33,849 | −6% |
| Maternal Education | 11.4 | 10.80 | −5% | 11.28 | 11.28 | 0% |
| Maternal age | 24.7 | 23.60 | −4% | 24.47 | 24.40 | 0% |
| Birth order | 2.9 | 3.00 | 3% | 2.97 | 2.84 | −4% |
| Male | 0.4 | 0.45 | 13% | 0.43 | 0.32 | −26% |
| Observations | 308 | 78 | 27 | 27 | 0 | |
Note: All of the cross family differences with the exception of birth order and male are statistically significant.
None of the differences within family are statistically significant