Appendix Table 1.
Sample Characteristics
| 1960 Census | Providence & Boston | Cortisol Sample | Sibling Sample | ||
|---|---|---|---|---|---|
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| Unweighted | Unweighted | Unweighted | Unweighted | Weighted | |
| Maternal Education | 11.5 | 11.4 | 11.07 | 11.4 | 11.6 |
| Family Income ($2010) | $37,971 | $26,013 | $24,403 | $26,233 | $35,113 |
| Mother Black | 0.03 | 0.12 | 0.13 | 0.08 | 0.03 |
| Maternal Age | 30.6 | 25.2 | 24.9 | 24.6 | 25.4 |
| Mother Single | 0.03 | 0.11 | 0.09 | 0.056 | 0.024 |
| Birthweight (grams) | 3185 | 3307 | 3290 | 3303 | |
| Gestation (weeks) | 36.8 | 40.1 | 39.9 | 40 | |
| Free Cortisol (ng/ml) | 24 | 22 | 20.5 | ||
| Verbal IQ 7 year | 99.9 | 99.2 | 100.2 | 101.8 | |
| Adult Education | 13.1 | 13.2 | 13.3 | ||
| Severe Chronic Condition 7 year | 0.089 | 0.099 | 0.099 | ||
| Observations | 17921 | 1058 | 320 | 320 | |