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How To... - Interpret Data - Case Studies - Obesity
Is obesity changing over time?

 
More info on Obesity Case Study:
Is obesity a  problem?
Is it changing over time?
Where is the problem?
Who is affected?
Is it changing among specific groups over time?
   

Although obesity in the state WIC Program is above the Healthy People 2010 objective target of 5 percent for the 2001 reporting year, it is also important to consider if the prevalence has increased or decreased over time. The PedNSS Table 12C, Summary of Trends in Growth and Anemia Indicators, provides trend data in obesity prevalence for all years that the contributor has participated in PedNSS. This table can be used to look at recent changes in prevalence of obesity by comparing the prevalence in 2001 with the previous year and it can be used to look at changes that have occurred over longer periods. This trend table includes data for all years available from the state WIC program.


Sample:  PedNSS Table 12C, Summary of Trends in Growth and Anemia Indicators

sample of table showing trends in >= 2 years overweight

1 The prevalence of obesity increased slightly from 2000 to 2001, 12.5% and 12.9%, respectively.
2 The prevalence of obesity during the 10-year period from 1992 to 2001 increased from 8.9% to 12.9%. The absolute increase is 4.0 percentage points and the relative increase is 45% ((12.9 minus 8.9)/8.9 = .45 X 100 = 45 percent) during this 10-year period.

The following graph, derived from Table 12C, shows the gradual increase of obesity among children 2 to 5 years of age. The line represents the Total or overall prevalence for the state WIC program that increased from 8.9% in 1992 to 12.0% in 2001 for the trend period.

Trends in prevalence of obesity
among children aged 2 to <5 years
Trends in prevalence of overweight among children aged 2 to <5 years

* > 95th percentile BMI-for-age, CDC Growth Charts, 2000.
5% of children are expected to fall above the 95th percentile.


Is obesity changing over time?

Trend data show that the prevalence of obesity for children 2 to 5 years of age has increased from 8.9 to 12.9 percent, a relative increase of 45%, therefore 45% more children were obese in 2001 compared to 1992.

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Page last reviewed: October 29, 2009
Page last updated: October 29, 2009
Content Source: Division of Nutrition, Physical Activity and Obesity, National Center for Chronic Disease Prevention and Health Promotion

  

 


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