|Komlos, John and Breitfelder, Ariane and Sunder, Marco (8. June 2008): The transition to Post-industrial BMI values among US children. Discussion Papers in Economics 2008-10|
Background: The trend in the BMI values of US children has not been estimated very convincingly because of the absence of longitudinal data. Our object is to estimate time series of BMI values by birth cohorts instead of measurement years. Methods: We use five regression models to estimate the BMI trends of non-Hispanic US-born black and white children and adolescents ages 2-19 between 1941 and 2004. Results: The increase in BMIZ values during the period considered was 1.3σ (95% CI: 1.16σ; 1.44σ) among black girls, 0.8σ for black boys, 0.7σ for white boys, and 0.6σ for white girls. This translates into an increase in BMI values of some 5.6, 3.3, 2.4, and 1.5 units respectively. While the increase in BMI values started among the birth cohorts of the 1940s among black girls, the rate of increase tended to accelerate among all four ethnic/gender groups born in the mid-1950s – early-1960s. Conclusion: Some regional evidence leads to the conjecture that the spread of automobiles and radios affected the BMI values of boys already in the interwar period. We suppose that the changes in lifestyle associated with the labor saving technological developments of the 20th century are associated with the weight gains observed. The increased popularity of television viewing was most prominently associated with the contemporaneous acceleration in BMI gain.
|Item Type:||Paper (Discussion Paper)|
|Keywords:||BMI, BMIZ, US, children, youth, adolescents, NHANES, obesity epidemic, overweight|
Economics > Discussion Papers in Economics
Economics > Discussion Papers in Economics > Economic History
Economics > Chairs > Chair of Economic History
|Subjects:||300 Social sciences > 300 Social sciences, sociology and anthropology|
300 Social sciences > 330 Economics
|Deposited On:||10. Jun 2008 08:55|
|Last Modified:||15. Apr 2014 11:06|
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