Njabulo Mbanda, Shakila Dada, Kirsty Bastable, Gimbler-Berglund Ingalill, Schlosser Ralf W
A scoping review of the use of visual aids in health education materials for persons with low-literacy levels
Patient education and counseling
study describes development pilot testing observational system recording physical activityelementary school osrace version system developed observe document levels types physical activity physical social contexts physical activity elementary school students school day interobserver agreement scores summary data calculated categories kappa statistics greater 80 exception activity initiator category interobserver agreement scores 96 greater osrace shown reliable observation system allows researchers assess physical activity behaviors contexts behaviors effectiveness physical activity interventions school environment osrace yield data high interobserver reliability provide relatively extensive contextual information physical activity students elementary schools