Assessing screening policies for childhood obesity

Area of Science:

• Pediatrics
• Public Health
• Preventive Medicine

Background:

• Childhood obesity is a growing public health concern.
• Current screening recommendations from the United States Preventive Services Task Force (USPSTF) and an Expert Committee differ on starting age.
• There is a need to evaluate these recommendations and explore optimal screening strategies.

Purpose of the Study:

• To model Body Mass Index (BMI) distributions in children and adolescents.
• To determine age- and sex-dependent screening thresholds that minimize adult disease prevalence.
• To compare an optimized screening policy with existing USPSTF and Expert Committee recommendations.

Main Methods:

• Utilized National Longitudinal Survey of Youth (NLSY) data to model BMI distribution through age 18.
• Estimated treatment impact on BMI using a systematic review for USPSTF.
• Modeled adult hypertension and diabetes prevalence at age 40 using Panel Study of Income Dynamics (PSID) data.
• Developed an optimal biennial screening policy by deriving BMI thresholds to minimize adult disease.

Main Results:

• The optimized policy reduced adult disease prevalence by 3% compared to USPSTF recommendations at the same referral rate.
• The optimized policy achieved the same disease prevalence as USPSTF but with a 28% reduction in treatment referrals.
• Compared to the Expert Committee recommendation, the optimized policy showed greater reductions in disease prevalence (6%) and referral rates (40%).
• The optimal policy primarily targeted 16-year-olds for treatment, with minimal referrals for children under 14.

Conclusions:

• Current childhood obesity screening recommendations may not be optimal for minimizing long-term adult disease.
• An optimized, age- and sex-dependent screening strategy focusing on older adolescents can improve outcomes.
• Implementing an optimized policy could lead to reduced adult disease prevalence and fewer unnecessary treatment referrals.