Percent of females ages 15 to 19 who did not have a birth in their teen years. The number of teen mothers is calculated by adding all first births to 15 to 19 year olds in the current year to all first births to 14 to 18 year olds in the previous year, and all first births to 13 to 17 year olds in the year before, etc. Then, females who delayed childbearing is calculated by subtracting the estimated number of teen mothers from the population of 15-19 year old girls in each state. Because data is pooled for some years, some teen mothers who gave birth when they are very young are excluded from these estimates.

Percent of females ages 15 to 19 who did not have a birth in their teen years. The number of teen mothers is calculated by adding all first births to 15 to 19 year olds in the current year to all first births to 14 to 18 year olds in the previous year, and all first births to 13 to 17 year olds in the year before, etc. Then, females who delayed childbearing is calculated by subtracting the estimated number of teen mothers from the population of 15-19 year old girls in each state. Because data is pooled for some years, some teen mothers who gave birth when they are very young are excluded from these estimates.