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. 2022 Sep 2;9:976537. doi: 10.3389/fcvm.2022.976537

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Copyright © 2022 Fang, He, Huang, Ran, Song, Hao, Yao, Li, Pan, Qin and Wang.

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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Combined effects of nighttime sleep duration and daytime napping on the risk of stroke. All hazard ratios were calculated with moderate sleep duration (6∼8 h/night) and no napping as the reference groups. HR, hazard ratio. *P < 0.05.