U.S. Department of Health and Human Services, Health Resources and Services Administration
| Maternal Age | Percent of Mothers | ||
|---|---|---|---|
| Unrevised | Revised | ||
*The 1989 Standard Certificate of Live Birth (unrevised) was used in 34 reporting areas including New York City and Washington, DC; the 2003 revised birth certificate was used in 19 reporting areas.↑ Source: Centers for Disease Control and Prevention. National Center for Health Statistics, National Vital Statistics System. Births 2006. Analysis conducted by the Maternal and Child Health Information Resource Center. | |||
| Under 20 Years | 13.5 | 17.3 | |
| 20-29 Years | 12.2 | 15.9 | |
| 30-39 Years | 5.7 | 7.4 | |
| 40-54 Years | 6.2 | 7.8 | |