About Pregnancy Data Quality
The purpose of the Pregnancy module is to generate interactive statistics of birth,
fetal death, abortion, and pregnancy data. The intended audience is researchers,
public health officials, students, and the general public. The data originates from
3 different sources of data: birth certificates, fetal death reports, and abortion
The output variable pregnancy is the sum of the three datasets. All three datasets
are South Carolina residence data. Users can select year, race, marital status,
education, maternal age, region and outcome as a row or column variable. These same
selections can be further restricted using the drop down boxes. Zip code data is
only available for births and pregnancies data due to confidentiality rules associated
with fetal death and abortion data.
Users can generate on-the-fly maps and tables of the frequencies, rates, and percentages
along with trendlines and bar charts of the selected data. Rates cannot be calculated
at the zip code level due to the lack of census data. Birth rates and pregnancy
rates are per 100,000 annual population, where as fetal death rates and abortion
rates are per 1000 annual live births. When rates have been selected 95% Confidence
intervals can also be generated in the tables.
The interpretation of tables and maps is the users responsibility. Thorough labels
are provided however to make interpretation more intuitive. Many supporting pages
are provided with definitions, examples of rate calculations, Division of Biostatistics
and Health GIS contact information, and frequently asked questions to assist the
user in interpreting this data. Rates with small numbers are unreliable and should
be used cautiously.