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. 2022 Aug 5;9:918996. doi: 10.3389/fcvm.2022.918996

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Copyright © 2022 Yi, Wang, Guo, Sun, Shuai, Ma, Zuo, Liu and Wan.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Kaplan-Meier curve analysis of all-cause mortality stratified by the NAPAIR and age group. NAPAIR, Nighttime to all-day physical activity intensity ratio; NAP, nighttime active population; DAP, daytime active population.