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. 2023 Jul 6;15:533–546. doi: 10.2147/NSS.S415464

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© 2023 Feng et al.

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Changes in salivary cortisol levels at four time points during the Trier Social Stress Test.

Notes: Statistical analysis was performed using Two-way repeated measures of ANCOVA; The four time points are −20 min, 1 min, 15 min, and 30 min relative to the end of the test.

Abbreviation: H-SR or L-SR, high or low sleep reactivity.