Table 3.
Mixed Model Results of Main Effects of Sleep–Wake Concordance and Sex*Sleep–Wake Concordance Interactions on CVD Risk Factors.
| CVD risk variables | Sex*Concordance interaction | |||||
|---|---|---|---|---|---|---|
| b (SE) | p | R 2 a | b (SE) | p | R 2 b | |
| Wake BP | ||||||
| SBP | −.26 (.12) | .037 | .036 | .53 (.25) | .043 | .053 |
| DBP | −.16 (.09) | .070 | .037 | .18 (.17) | .298 | .011 |
| Sleep BP | ||||||
| SBP | −.35 (.13) | .008 | .041 | .61 (.30) | .050 | .051 |
| DBP | −.22 (.10) | .033 | .043 | .30 (.19) | .126 | .030 |
| Sleep/Wake BP ratio | ||||||
| SBP ratio | −.001 (.001) | .275 | 0.00 | .001 (.001) | .527 | 0.00 |
| DBP ratio | −.001 (.001) | .289 | 0.00 | .002 (.002) | .238 | 0.00 |
| Systemic inflammation | ||||||
| CRP | −.03 (.03) | <.001 | .122 | −.014 (.01) | .375 | .130 |
Covariates included in models: sex, age, race, education, and body mass index.
CRP = C-reactive protein; CVD = cardiovascular disease; DBP = diastolic blood pressure; SBP = systolic blood pressure.
a
R 2 = amount of variance explained beyond covariates.
b
R 2 = amount of variance explained beyond covariates and main effect of sleep–wake concordance.