Imputing accelerometer nonwear time in children influences estimates of sedentary time and its associations with cardiometabolic risk

摘要

BackgroundA limitation of measuring sedentary time with an accelerometer is device removal. The resulting nonwear time is typically deleted from the data prior to calculating sedentary time. This could impact estimates of sedentary time and its associations with health indicators. We evaluated whether using multiple imputation to replace nonwear accelerometer epochs influences such estimates in children.