Table 3.
Association of Unfair Treatment with Sleep in Linear Regression Models, Unadjusted, Adjusted for Covariates+, and Adjusted for Covariates + and Negative Emotions in the Full Sample.
| Unfair Treatment (Predictor) | ||||||
|---|---|---|---|---|---|---|
| Unadjusted | Adjusted for Covariates+ | Trait Anger+ | Hostility+ | Trait Anxiety+ | ||
| B(SE) | B(SE) | ΔR2 | B(SE) | B(SE) | B(SE) | |
| Outcome Measure | ||||||
| Self-Report Diary | ||||||
| Nightly Sleep Quality | −.01(.01) | −.01(.01) | .01 | −.01(.01) | −.01(.01) | .01(.01) |
| PSQI Sleep Quality | .17(.05)*** | .14(.05)** | .04 | .09(.05)* | .10(.05)** | .07(.05) |
| Epworth Sleepiness | .16(.06)** | .17(.06)** | .03 | .14(.06)** | .14(.06)** | .11(.06) |
| Actigraphy | ||||||
| Duration, hr | −.05(.01)*** | −.04(.01)*** | .05 | −.03(.01)** | −.04(.01)** | −.04(.01)** |
| Efficiency, % ++ | .01(.01)** | .01(.01)** | .02 | .01(.01) | .01(.01)* | .01(.01) |
| Polysomnography | ||||||
| Duration, hr | −.04(.01)** | −.03(.01)** | .02 | −.03(.02) | −.03(.02)* | −.03(.02)* |
| Efficiency, % ++ | .02(.01)** | .01(.01)** | .02 | .01(.01)* | .01(.01)** | .01(.01) |
| Wakefulness After Sleep Onset, min ++ | .01(.01) | .01(.01) | .01 | .01(.01) | .01(.01) | .01(.01) |
| Stage 3–4 Sleep ++ | −.03(.02) | −.01(.02) | .01 | −.01(.02) | −.01(.02) | −.01(.02) |
| Rapid Eye Movement | −.26(.07)*** | −.27(.08)*** | .05 | −.24(.08)** | −.26(.08)*** | −.24(.08)** |
| Apnea-Hypopnea Index ++ | .02(.01) | .01(.01) | .01 | .01(.01) | .02(.01) | .02(.01) |
Note.
***
p ≤ .001,
**
p ≤ .05,
*
p ≤ .10.
+
Covariates included in these models were age, sex, body mass index, composite socioeconomic status (score based on participants’ education and annual income), hypertensive and/or related medication use, and race/ethnicity.
++
Reported B coefficients are based on transformed variables.
Race/ethnicity coded as 0 for African Americans and + 1for Caucasians.