State Fact Sheet Sources

• US teen birth rate found in national vital statistics report by year (https://www.cdc.gov/nchs/data/nvsr/nvsr70/nvsr70-02-508.pdf) - 2019

• 1991 birth rate = 61.8 (https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6013a5.htm)

  • Percent change in national teen birth rate = (1991 teen birth rate – 2019 teen birth rate)/1991 teen birth rate = (61.8-16.7)/61.8 = 73%

• Proportion of teen mothers in US in 2019 (https://www.cdc.gov/nchs/data/nvsr/nvsr70/nvsr70-02-508.pdf) 

  • Add up births to moms aged 15-17: 4725+11862+2494 = 41,081

  • Add up births to moms aged 18-19: 47473+83120 = 130,593 

  • Add up births from 15-19: 41,081 + 130,593 = 171,674

  • Calculate % of births to 15-17 years = 41,081 / 171,674 *100 = 24%

  • Calculate % of birth to 18-19 years = 130,593/171,674 *100 = 76%

• % decrease in Iowa teen births between 2016 and 2020

  • (2016 teen births – 2020 teen births) / 2016 teen births *100 = (1784-1376)/1784*100 = 23%

• Statewide teen birth rates calculated by summing total number of births to 15-19 years in each year and dividing by the total population 

• Dating and violence section

  • Data from YRBS 2019 (https://idph.iowa.gov/PublicHealthData/Iowa-Youth-Risk-Behavior-Survey) 

• STD data found here https://idph.iowa.gov/hivstdhep/std/resources

County Fact Sheet Sources

• Data request with IDPH for gonorrhea and chlamydia cases by county among teens for 2015-2020 in 2-year increments (2015-2020)

• 15-19 year old female population by county collected from https://www.census.gov/programs-surveys/popest/technical-documentation/research/evaluation-estimates/2020-evaluation-estimates/2010s-county-detail.html

• Teen birth rate per 1000 females aged 15-19 years