Table 5. Cox model examining all sleep disturbance characteristic and incident dementia (Model A) and all-cause mortality (Model B) (N = 2,812), adjusting for covariates.
Model A Incident Dementiaa |
Model B All-Cause Mortalityb |
|||||||
HR | P-Value | Lower | Upper | HR | P-value | Lower | Upper | |
Difficulty with Alertness | ||||||||
Never/Rarely | ||||||||
Some Days | 1.14 | 0.427 | 0.83 | 1.57 | 1.42 | 0.022 | 1.05 | 1.92 |
Most Days/Every Day | 1.08 | 0.730 | 0.70 | 1.67 | 1.57 | 0.026 | 1.05 | 2.33 |
Nap Frequency | ||||||||
Never/Rarely | ||||||||
Some Days | 1.04 | 0.818 | 0.75 | 1.45 | 1.14 | 0.416 | 0.83 | 1.57 |
Most Days/Every Day | 0.99 | 0.954 | 0.70 | 1.41 | 1.34 | 0.080 | 0.97 | 1.87 |
Sleep Latency | ||||||||
<15 minutes | ||||||||
15-30 minutes | 1.21 | 0.230 | 0.88 | 1.66 | 1.21 | 0.198 | 0.90 | 1.63 |
>30 minutes | 1.44 | 0.056 | 0.99 | 2.10 | 0.98 | 0.901 | 0.67 | 1.43 |
Sleep Quality | ||||||||
Good/Very Good | ||||||||
Fair | 0.76 | 0.148 | 0.53 | 1.10 | 1.05 | 0.766 | 0.76 | 1.46 |
Poor/Very Poor | 0.82 | 0.477 | 0.47 | 1.42 | 1.28 | 0.348 | 0.77 | 2.13 |
Sleep Duration | ||||||||
7-8hours | ||||||||
≤5 hours | 2.62 | 0.001 | 1.48 | 4.64 | 2.07 | 0.016 | 1.15 | 3.74 |
6-7 hours | 0.92 | 0.624 | 0.65 | 1.30 | 1.06 | 0.737 | 0.77 | 1.45 |
≥9 hours | 1.06 | 0.779 | 0.71 | 1.57 | 1.23 | 0.330 | 0.81 | 1.87 |
Snoringc | ||||||||
Never/Rarely | ||||||||
Some /Most /Every Night | 1.67 | 0.050 | 1.00 | 2.80 | 1.27 | 0.368 | 0.75 | 2.15 |
Notes: bold indicates significance at the p<0.05 level. aAdjusted models control for demographic characteristics, including age, marital status, race, education, health conditions, and body weight. bAdjusted models control for demographic characteristics, including age, marital status, race, education, health conditions, body weight, and incident dementia. cDue to a small sample size in “Most/Every Night,” the comparison conditions “Some,” Most Nights,” and “Every Night” were combined as the exposure for snoring.