This study is a randomized controlled trial of a 12-week community-based group parenting intervention (“CASITA”) in Lima, Peru. CASITA improved neurodevelopment in a pilot study of 60 Peruvian children and subsequently scaled to 3,000 households throughout the district. The objective of this study was to assess intervention effectiveness when implemented at scale. A total of 347 children ages 6–20 months (52.7% male, 100% identified as “mestizo”) at risk for developmental difficulties were randomized to immediate or delayed CASITA. At 3 months after enrollment, the immediate arm showed significantly higher overall development, based on the Extended Ages and Stages Questionnaire and Home Observation for Measurement of the Environment scores (Cohen’s ds = .36 and .31, respectively). Programs demonstrably effective at scale could help address children’s development risks worldwide.

中文翻译：

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大规模成功：秘鲁利马有延迟风险的 6-20 个月儿童社区神经发育干预 (CASITA) 的结果

本研究是一项在秘鲁利马进行的为期 12 周的基于社区的团体育儿干预（“CASITA”）的随机对照试验。CASITA 在一项针对 60 名秘鲁儿童的试点研究中改善了神经发育，随后扩展到整个地区的 3,000 个家庭。本研究的目的是评估大规模实施时的干预效果。共有 347 名 6-20 个月大的儿童（52.7% 为男性，100% 被确定为“混血儿”）有发育困难的风险，被随机分配到立即或延迟 CASITA。入组后 3 个月，根据延长的年龄和阶段问卷和家庭观察环境评分（Cohen's ds = .36 和 .31，分别）。大规模有效的计划可以帮助解决全球儿童的发展风险。