The impact of packaging and messaging on adherence to malaria treatment: Evidence from a randomized controlled trial in Uganda
在乌干达开展随机试验，发现包装上贴简短目标消息的贴纸使抗疟药依从性提高9%、未服药片减少29%，而昂贵专用包装无显著效果；症状早缓解者更易不依从，贴纸干预对此类患者效果最强。
Despite substantial public and private costs of non-adherence to infectious disease treatments, patients often do not finish their medication. We explore adherence to medication for malaria, a major cause of morbidity and health system costs in Africa. We conducted a randomized trial in Uganda testing specialized packaging and messaging, designed to increase antimalarial adherence. We find that stickers with short, targeted messages on the packaging increase adherence by 9% and reduce untaken pills by 29%. However, the currently used method of boosting adherence through costly, specialized packaging with pictorial instructions had no significant impacts relative to the standard control package. We develop a theoretical framework of the adherence decision, highlighting the role of symptoms, beliefs about being cured, and beliefs about drug effectiveness to help interpret our results. Patients whose symptoms resolve sooner are substantially less likely to adhere, and the sticker interventions have the strongest impact among these patients.