Deconstructing race and gender differences in adolescent obesity: Oaxaca-blinder decomposition

Area of Science:

• Public Health
• Epidemiology
• Adolescent Health

Background:

• Adolescent obesity is a significant public health concern in the United States.
• Racial and gender disparities exist in obesity prevalence among adolescents.
• Understanding the drivers of these disparities is crucial for targeted interventions.

Purpose of the Study:

• To investigate the contributing factors to racial and gender disparities in adolescent obesity.
• To utilize Oaxaca-Blinder decomposition to analyze obesity prevalence differences.

Main Methods:

• Data from the 2010 National Youth Physical Activity and Nutrition Study (NYPANS) were used.
• Objective height and weight data determined obesity status.
• Oaxaca-Blinder decomposition analyzed racial and gender obesity prevalence differences.

Main Results:

• Measured characteristics explained 46.8% of racial disparities but only 11.9% of gender disparities in obesity.
• Racial disparities were linked to less home fruit/vegetable access, more school lunches, and fewer sports for Black girls compared to White girls.
• Gender disparities were associated with differing relationships between physical activity and obesity.

Conclusions:

• Home and school food environments explain racial obesity disparities, but not gender disparities.
• Further research is needed to explore gender-specific mechanisms linking physical activity to obesity.