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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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Multivariate-adjusted spline curves for associations of sleep duration with incident stroke. The curves demonstrate that participants with short nighttime sleep duration (A) and total sleep duration (B) had a higher risk of stroke. (A) Nighttime sleep duration; (B) Total sleep duration. Adjusted for age, gender, educational level, marital status, area of residence, and behaviors including smoking, drinking, and physical activity. The reference group was 7 h/night for nighttime sleep duration and 8 h/day for total sleep duration.