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How To... - Interpret Data - Case Studies - Breastfeeding
When: Is breastfeeding increasing or decreasing over time?

 
More info on Breastfeeding Case Study:
 Is low breastfeeding prevalence a health problem?
 Is it changing over time?
 Where is the problem?
 Who is affected?
 Is it changing among specific groups over time?
   

Although breastfeeding prevalences in the state WIC Program are below the Healthy People 2010 target for the 2001 reporting year, it is important to consider if the prevalence increased or decreased over time. PedNSS Table 13C, Summary of Trends in Breastfeeding Indicators, is used to compare the most recent calendar year of data to the previous calendar year and it provides trends in breastfeeding prevalence over time. This trend table includes data for all years available from the state WIC program.


Sample: PedNSS Table 13C, Summary of Trends in Breastfeeding Indicators

table showing trends in breastfeeding indicators by year

1 The prevalence of ever breastfed increased from 44.4% in 2000 compared to 48.4% in 2001.
2 The prevalence of infants breastfed at 6 months was 17.5% in 2000 compared to 18.5% in 2001.
3 The prevalence of breastfed at 12 months was 12.5% in 2000 and 14.2% in 2001.
4 The first year of data available was 1984.

table showing trends in prevalence of breastfeeding indicators from 1992-2001

5 The prevalence of infants ever breastfed, breastfed at 6 months, and breastfed at 12 months increased during the 10-years period from 1992 to 2001.  However, the most rapid increase occurred among infants ever breastfed and that increased from 25.7 to 48.4 percent during this time period. The percentage increase or relative increase during this time period is 88% ((48.4 minus 25.7)/25.7 = 0.88 x 100 = 88 %).

 The relative increase of 88% in the prevalence of infants ever breastfed between 1992 and 2001 is a large increase that should be further examined to determine what intervention programs or characteristics of the population may have contributed to the improvement.

The graph, derived from Table 13C, shows the rapid increase in the percentage of infants ever breastfed and more gradual increase in breastfed at 6 and 12 months between 1992 and 2001.


Trends in the percentage of infants ever breastfed, and breastfed at least 6 and 12 months
Trends in the percentage of infants ever breastfed, and breastfed at least 6 and 12 months

Year 2010 targets: increase the proportion of mothers who breastfeed their babies a) in the early postpartum period to 75%, b) at 6 months to 50%, and c) at 1 year to 25%.


When: Are breastfeeding prevalences increasing or decreasing over time?

There has been a large increase in ever breastfed prevalence over the10-year period between 1992 and 2001. The relative increase during this time period in prevalence of infants who were ever breastfed was 88%. Gradual increases also occurred in breastfed at 6 months and breastfed 12 months.

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United States Department of Health and Human Services
Centers for Disease Control and Prevention
National Center for Chronic Disease Prevention and Health Promotion
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This page last updated March 04, 2010

United States Department of Health and Human Services
Centers for Disease Control and Prevention
National Center for Chronic Disease Prevention and Health Promotion
Division of Nutrition and Physical Activity