Rees-Punia Erika, Nelson Jillian, Briggs Peter J, Joiner Nance, Hodge James M, Bontemps-Jones Jeuneviette E, Bloodworth Den E, Yeager Ashley, McCrary Jeshondria, Patel Alpa
Department of Population Science, American Cancer Society, Atlanta, Georgia, USA
Department of Population Science, American Cancer Society, Atlanta, Georgia, USA.
BMJ Open. 2025 Jan 14;15(1):e085896. doi: 10.1136/bmjopen-2024-085896.
This paper describes the data collection and management methods for the Cancer Prevention Study-3 (CPS-3) Accelerometry Substudy, a nested cohort of device-based physical activity and sedentary time data.
US-based CPS-3 participants (initially enrolled 2006-2013) who completed the 2018 follow-up survey and had a valid email address were invited to the Accelerometry Substudy (n=109 780). Among the 23 111 participants who registered and were shipped an ActiGraph GT3X+ accelerometer, 21 219 participants returned the device with a complete wear log (91.8%) and 20 950 (90.6%) provided at least three adherent days of data (eg, days with at least 10 hours of wear).
Participants with ≥3 adherent days were predominantly female (n=16 187, 77.3%), non-Latino white (n=17 977, 85.8%) and had an average age of 58 years (SD=9.8). The median daily wear time was 15.3 hours, which did not vary considerably by wear day. The median time spent in moderate-intensity aerobic physical activity was 29 min/day (IQR=36), and the median time in vigorous physical activity was 3 min/day (IQR=13). Participants were sedentary for 9.4 hours (564 min, IQR=171 min) and accumulated a median of 6474 steps per day (IQR=5348).
The full CPS-3 cohort will be linked with the National Death Index and state cancer registries biennially. Participants will be sent triennial surveys for the next two decades. Future analyses within the CPS-3 Accelerometry Substudy more specifically aim to identify relationships between physical activity, sedentary time and health outcomes, primarily cancer incidence, survival and survivorship.
本文介绍癌症预防研究-3（CPS-3）加速度计子研究的数据收集和管理方法，该子研究是一个基于设备的身体活动和久坐时间数据的嵌套队列。
邀请了居住在美国的CPS-3参与者（最初于2006年至2013年入组），他们完成了2018年的随访调查且有有效的电子邮件地址，参与加速度计子研究（n = 109780）。在23111名注册并收到ActiGraph GT3X +加速度计的参与者中，21219名参与者归还了设备并附有完整的佩戴记录（91.8%），20950名（90.6%）提供了至少三天连续的有效数据（例如，佩戴时间至少10小时的天数）。
有至少三天连续有效数据的参与者主要为女性（n = 16187，77.3%）、非拉丁裔白人（n = 17977，85.8%），平均年龄为58岁（标准差 = 9.8）。每日佩戴时间的中位数为15.3小时，不同佩戴日之间变化不大。中等强度有氧运动的时间中位数为每天29分钟（四分位距 = 36），剧烈身体活动的时间中位数为每天3分钟（四分位距 = 13）。参与者久坐时间为9.4小时（564分钟，四分位距 = 171分钟），每天步数中位数为6474步（四分位距 = 5348）。
整个CPS-3队列将每两年与国家死亡指数和州癌症登记处进行关联。在接下来的二十年里，将每三年向参与者发送一次调查问卷。CPS-3加速度计子研究未来的分析更具体地旨在确定身体活动、久坐时间与健康结果之间的关系，主要是癌症发病率、生存率和生存质量。
