Priority Indicator #14: Percentage of Babies Whose Mothers Received Adequate Prenatal Care

Contents: Background Information | Data Tables | Data Charts | Commentary | Download Data
New: Prenatal Care Data Map (Internet Explorer Users: zoom to full extent for best map quality)

Background Information

What Does This Indicator Mean?
Adequate prenatal care is defined as five or more prenatal visits beginning prior to the third trimester of pregnancy.  This indicator is calculated as the number of babies whose mothers received adequate care divided by the total births minus the births for which data is missing, multiplied by 100 to obtain the percentage.

Other Risk Factors or Indicators to Consider
Early, high quality prenatal care is critical to improving pregnancy outcomes. Inadequate prenatal care can be directly associated with increased incidence of low birth weight babies and infant mortality.

In addition to prenatal care, factors such as infant mortality rates, the percentage of healthy birth weight babies, and the percentage of families without health insurance should be considered when analyzing the health of newborns and their mothers, as well as the impact on the community. Adequate prenatal care can also be used when evaluating access to health care by Oregon families.

Limitations of the Data
When there are fewer than ten births in each zip code in a particular year, that zip code is not reported here to ensure confidentiality.

Data Sources

  • Oregon Health Division, Oregon Department of Human Services

Presentation and Discussion of Data

The table below shows the percentage of babies whose mothers received adequate prenatal care.  The table presents total percentages for Marion and Polk Counties and zip code data for Marion and Polk Counties.  Some zip codes are not presented because detailed reporting of small numbers may be a breach of confidentiality. (Click here to see a map of zip codes in Marion and Polk counties.)

  1996 1997 1998 1999 2000 2001
Oregon 94.6% 95.0% 94.7% 94.6% 94.9% 94.4%
Marion County 93.5% 93.7% 92.2% 90.7% 90.8% 92.5%
Polk County 96.4% 97.4% 97.3% 96.4% 96.6% 95.2%
Marion County Zip Codes
97002 96.2% 98.5% 98.4% 93.8% 94.2% 95.7%
97020 N/A N/A N/A N/A 86.7% 100.0%
97026 84.4% 90.9% 76.9% 84.8% 82.6% 82.6%
97032 93.4% 95.2% 89.3% 92.1% 82.1% 89.8%
97071 88.7% 90.7% 84.4% 80.9% 81.8% 86.6%
97137 96.3% 96.2% 93.9% 92.9% 100.0% 92.6%
97301 93.8% 92.9% 93.0% 90.2% 93.1% 92.9%
97302 95.9% 96.4% 95.1% 95.2% 94.1% 95.5%
97303 93.8% 93.5% 93.2% 92.0% 91.6% 92.7%
97304 98.0% 91.3% 100.0% 93.1% N/A N/A
97305 94.5% 92.3% 92.8% 90.7% 90.5% 92.7%
97306 98.6% 97.2% 96.3% 96.8% 96.0% 96.5%
97325 97.6% 93.8% 96.7% 97.4% 98.8% 95.3%
97352 97.0% 93.5% 97.0% 94.7% 93.9% 86.5%
97362 88.6% 91.5% 85.9% 70.0% 83.9% 81.8%
97375 N/A N/A N/A N/A 89.5% 100.0%
97381 90.7% 93.2% 90.9% 87.7% 85.2% 92.3%
97383 92.5% 96.4% 94.5% 96.8% 90.5% 96.8%
97385 100.0% 100.0% 91.7% 94.7% 100.0% 96.8%
97392 91.3% 96.0% 87.2% 95.7% 100.0% 100.0%
Polk County Zip Codes
97304 95.8% 97.3% 96.5% 95.5% 96.4% 93.8%
97338 99.0% 98.1% 98.3% 98.1% 98.0% 98.6%
97344 92.9% 100.0% 100.0% 100.0% 92.3% N/A
97347 100.0% 100.0% 95.0% 91.7% 100.0% 100.0%
97351 96.7% 93.6% 98.3% 94.2% 92.6% 94.2%
97361 94.3% 98.1% 96.2% 97.6% 98.1% 95.1%
Source: Oregon Health Division data, compiled by Marion-Polk CHIP.  http://www.willamette.edu/publicpolicy/chip

The chart below shows the percentage of babies whose mothers received adequate prenatal care.  It shows totals for Marion and Polk Counties, as well as the state of Oregon.

The chart below shows the percentage of mothers in each zip code in Marion and Polk Counties who received adequate prenatal care.

Commentary

The percentage of mothers who received adequate prenatal care in Marion County was lower than the percentage for the state as a whole.  The percentage for Polk County was higher than the state rate.  

 The percentages of babies whose mothers received early prenatal care in Marion County decreased between 1997 and 1999, then began to increase between 199 and 2001. In Polk County the percentage of mothers who received adequate prenatal care remained fairly constant between 1996 and 2001, as did the state rate.  

Early prenatal care has been selected as one of the Oregon Benchmarks.  The 2000 target for the state as a whole was 90% and the 2010 target is 95%.  

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This page last updated 14 April 2003