Baby's First Years (BFY), New York City, New Orleans, Omaha, and Twin Cities, 2018-2020

audio computer-assisted self interview (ACASI); computer-assisted personal interview (CAPI); computer-assisted telephone interview (CATI); coded on-site observation; coded video observation; face-to-face interviewPlease see the wave-specific User Guides, located under the "Data and Documentation" tab, for technical details and other characteristics of the data collection, including measures taken to maintain participant confidentiality.All papers resulting from the use of Baby's First Years data must be submitted to PubMed upon acceptance for publication. Publications must include the study citation and acknowledgment as worded in the Summary.音频计算机辅助自我访谈（Audio Computer-Assisted Self Interview, ACASI）、计算机辅助个人访谈（Computer-Assisted Personal Interview, CAPI）、计算机辅助电话访谈（Computer-Assisted Telephone Interview, CATI）、编码式现场观察、编码式视频观察及面对面访谈。如需了解本次数据采集的技术细节、其他相关特征（包括为保护参与者隐私所采取的各项措施），请参阅位于「数据与文档」标签下的各波次专属用户指南。凡使用婴儿早期（Baby's First Years）数据集完成的研究论文，在被录用待发表时，均需提交至PubMed。发表成果必须包含研究引用信息，并遵循摘要中规定的措辞添加致谢内容。