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. Author manuscript; available in PMC: 2021 Oct 4.
Published in final edited form as: Thorax. 2019 Aug 22;75(1):57–63. doi: 10.1136/thoraxjnl-2019-213533

Table 4.

Associations of NREM and REM duty cycle with SBP and DBP

% Change in SBP (95% CI)* Pvalue % Change in DBP (95% CI)* P value
NREM duty cycle
 Unadjusted model (n=1847) −1.7 (−2.5 to −1.0) <0.001 −0.1 (−0.7 to 0.6) 0.86
 Model 1 (n=1813) −0.9 (−1.6 to −0.2) 0.01 −0.5 (−1.2 to 0.1) 0.10
 Model 2 (n=1802) −0.9 (−1.6 to −0.2) 0.02 −0.5 (−1.1 to 0.1) 0.11
 Model 3 (n=1754) −0.9 (−1.6 to −0.1) 0.02 −0.6 (−1.2 to 0.1) 0.09
REM duty cycle
 Unadjusted model (n=1811) −1.8 (−2.6 to −1.1) <0.001 0.1 (−0.5 to 0.8) 0.75
 Model 1 (n=1778) −0.9 (−1.7 to −0.2) 0.002 −0.3 (−1.0 to 0.3) 0.30
 Model 2 (n=1767) −0.9 (−1.6 to −0.1) 0.02 −0.2 (−0.8 to 0.4) 0.54
 Model 3 (n=1713) −0.7 (−1.4 to 0.1) 0.07 −0.1 (−0.8 to 0.5) 0.69

Model 1: Adjusted for age, sex, race/ethnicity, body mass index (kg/m2), smoking status, cigarette pack-years, alcohol use, periodic limb movement, education level.

Model 2: Model 1+hypoxic burden ((%·min)/hour).

Model 3: Model 2+odds ratio product.

*

All results reported per SD increment of natural log-transformed NREM and REM duty cycle.

DBP, diastolic blood pressure; NREM, non-rapid eye movement; REM, rapid eye movement;SBP, systolic blood pressure.