This dataset contains the annual number of births to mothers aged 15-19 years old and annual birth rate (births per 1,000 females aged 15-19 years) with corresponding 95% confidence intervals, by Chicago community area, for the years 1999 – 2009. See the full dataset description for more information: https://data.cityofchicago.org/api/assets/80918D2A-38FF-4A2C-9831-CD3EAC3C02BC

This dataset contains the annual number and percent of live births by the trimester in which the mother began prenatal care, with corresponding 95% confidence intervals, by Chicago community area, for the years 1999 – 2009. See full description at http://bit.ly/KcmIg2