Effects of the Informed Health Choices Secondary School Intervention on the Ability of Lower Secondary Students in Kenya to Think Critically About Health Choices: 1-year Follow-up of a Cluster-randomized Trial

Abstract

This cluster-randomized trial evaluated the one-year follow-up of the Informed Health Choices (IHC) secondary school intervention in Western Kenya. Conducted across 80 schools, the intervention included 10 lessons and teacher training on critical thinking regarding health claims. After one year, 53.2% of students in the intervention group achieved a passing score compared to 32.2% in the control group, showing a 20.8% improvement. Although retention was positive, the rate declined from immediate post-intervention, indicating the need for refresher training.