This article describes and addresses the challenges researchers face when utilizing natural experimental studies to evaluate changes to the retail food environment. Through the use of case studies, the article describes strategies and approaches for overcoming these challenges. The challenges are divided into categories of: 1) study design and analysis; 2) selection of participants, selection of measure, and obtainment of data; and 3) real-world considerations. Advantages and disadvantages to each approach are provided. Consideration of these challenges and best practices can minimize bias and ensure natural experimental studies effectively assess the impact of policies and programs on food access, availability, and intake for use by stakeholders, policymakers, and food retailers.
Best Practices for Using Natural Experiments to Evaluate Retail Food and Beverage Policies and Interventions
Promoting Responsive Bottle-Feeding Practices Among Women, Infants, and Children (WIC) Mothers to Reduce Infants’ Rapid Weight Gain and Obesity
Bottle-fed infants are at significantly greater risk for overfeeding and rapid weight gain (RWG), yet few studies focus on promoting healthy feeding practices for bottle-feeding caregivers. Bottle-feeding caregivers receive little support related to learning appropriate bottle-feeding practices, and this problem is pronounced in low-income, minority populations at higher risk for … More
Studying the Community Eligibility Provision’s Broad Impact–On Child Nutrition, Health, Academics, School Attendance, and Family Food Security
In 2010, the Healthy Hunger-Free Kids Act (HHFKA) initiated a number of major changes in child nutrition programs, including the establishment of the Community Eligibility Provision (CEP) for the National School Lunch and School Breakfast Programs. Implemented nationwide in SY 2014/15 to increase school meal participation and improve food security … More
CSPI developed a case study that provides insights into policy strategy and advocacy best practices that resulted in passage of the Healthy, Hunger-Free Kids Act of 2010 (HHFKA). The case study outlines key lessons to help inform nutrition and public health policy initiatives, as well as continued implementation and defense of … More