Changing Body Mass Index Distribution and Obesity Prevention
Author Information
Author(s): Penman Alan D, Johnson William D
Primary Institution: University of Mississippi Medical Center
Hypothesis
The adult population distribution of BMI is more correctly described by a positively skewed distribution and that over time the degree of skewing has increased.
Conclusion
The population distribution of BMI has become increasingly skewed over time, indicating that obesity prevention measures may need to be reconsidered.
Supporting Evidence
- The population distribution of BMI has become increasingly skewed over time.
- Data from the Minnesota Heart Health Program showed the greatest increase in BMI occurred in the upper part of the distribution curve.
- Cross-sectional data from the Mississippi adult population indicated a positive skew in BMI distribution from 1990 to 2003.
Takeaway
This study looks at how the average weight of people is changing and suggests that we might need to change how we try to help people not be overweight.
Methodology
The study used cross-sectional data from the INTERSALT study and other cohort studies to analyze BMI distribution.
Potential Biases
The assumption that BMI follows a normal distribution may not be accurate.
Limitations
The results may not be generalizable to the larger population due to limited published data from large cohort studies.
Participant Demographics
Data was collected from various populations across 32 countries.
Statistical Information
P-Value
0.93
Statistical Significance
p<0.05
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