nuMoM2b Daily Sleep Log Visit 2 [V2M] Dataset in Nulliparous Pregnancy Outcomes Study: Monitoring Mothers-to-be

Data from Daily Sleep Log Visit 2 [V2M] completed by a subset of participants who participated in the Sleep Patterns and Quality Substudy in which participants maintained a daily sleep log while they wore the ActiWatch following Visit 2 to capture information on sleep quality, issues, and disruptions
Study Description
NuMoM2b studied underlying, interrelated, mechanisms of adverse pregnancy outcomes (e.g., preterm birth, preeclampsia, fetal growth restriction) in pregnant women with no previous pregnancy lasting 20 weeks-0 days or more estimated gestational age (nulliparas). The network included 8 clinical sites, subsites, NICHD, and a data center. Women enrolled early in pregnancy and were followed through delivery, with study visits at 6 weeks-0 days to 13 weeks-6 days, 16 weeks-0 days to 21 weeks-6 days, 22 weeks-0 days to 29 weeks-6 days gestation, and delivery. Data collected through interviews, self-administered questionnaires, clinical measurements, ultrasounds, and medical records review included demographic, psychosocial, dietary, physiologic, health, and pregnancy outcome information. Subsets of participants enrolled in sleep disordered breathing, sleep patterns and quality, and fetal adrenal gland substudies. Pregnant women with no previous pregnancy lasting =20 weeks estimated gestational age (nulliparas); although 10,038 women enrolled in the study, during consent, only 9,289 of these women agreed to release their data into shared databases maintained by NIH

本数据集来源于参与睡眠模式与质量子研究的部分受试者所完成的第二次睡眠日记随访[V2M]。该子研究要求受试者在第二次随访结束后佩戴活动记录仪（ActiWatch）的同时坚持每日记录睡眠日记，以采集睡眠质量、睡眠问题及睡眠中断相关信息。

研究概况
NuMoM2b研究旨在探究既往无妊娠时长≥20周0天估算胎龄妊娠的初产妇发生不良妊娠结局（如早产、子痫前期、胎儿生长受限）的潜在相互关联机制。该研究网络包含8个临床中心、分中心、美国国立卫生研究院儿童健康与人类发展研究所（National Institute of Child Health and Human Development, NICHD）以及1个数据中心。受试者于妊娠早期入组，随访至分娩，研究随访节点涵盖妊娠6周0天至13周6天、16周0天至21周6天、22周0天至29周6天，以及分娩时。研究通过访谈、自填问卷、临床检测、超声检查及病历审查采集的数据，涵盖人口统计学、社会心理学、膳食、生理、健康状况及妊娠结局相关信息。部分受试者参与了睡眠呼吸障碍、睡眠模式与质量以及胎儿肾上腺子研究。
本研究的纳入对象为既往无妊娠时长≥20周估算胎龄的初产妇；尽管该研究共入组10038名女性，但在知情同意阶段，其中仅9289名女性同意将其数据上传至由美国国立卫生研究院（National Institutes of Health, NIH）维护的共享数据库。