Table 2.
Distribution of selected study population characteristics across categories of sleep duration and daytime sleepiness.
| <7 h per night, n = 334 | ≥7 h per night, n = 417 | P | Low daytime sleepiness, n = 574 | High daytime sleepiness, n = 186 | P | |
|---|---|---|---|---|---|---|
| Age (y) | 51.2 ± 13.6 | 54.3 ± 14.4 | <.01 | 54.5 ± 13.9 | 48.1 ± 13.3 | <.01 |
| BMI (kg/m2) | 33.0 ± 7.6 | 32.3 ± 7.6 | .22 | 32.2 ± 7.4 | 34.0 ± 7.9 | <.01 |
| Mexican American | 84.3% | 83.2% | .85 | 83.8% | 85.5% | .59 |
| Male | 38.6% | 34.0% | .19 | 37.6% | 31.7% | .14 |
| Smoke | 7.5% | 8.6% | .57 | 6.3% | 14.5% | <.01 |
| ≥Some college | 59.9% | 49.4% | <.01 | 53.3% | 55.9% | .53 |
| >$50,000 | 35.5% | 23.6% | <.01 | 29.4% | 27.8% | .67 |
| Employed | 54.3% | 71.9 | <.01 | 60.1% | 63.5% | .33 |
| Depressive symptoms | 1.1 ± 1.5 | 0.8 ± 1.3 | <.01 | 0.7 ± 1.2 | 1.6 ± 1.7 | <.01 |
| Sleep apnea | 12.0% | 9.95 | .35 | 8.2% | 18.8% | <.01 |
| Hypertension | 54.2% | 57.1% | .43 | 57.7% | 50.5% | .09 |
| Diabetes | 24.5% | 25.9% | .67 | 25.4% | 23.7% | .63 |
| History of CVDa | 9.0% | 12.3% | .15 | 11.0% | 10.4% | .83 |
| Neighborhood disadvantage | −1.4± 0.9 | −1.4± 0.8 | .23 | −1.4 ± 0.9 | −1.4 ± 0.9 | .52 |
| Violent crime per capita* 100,000b | 602.2 ± 516.1 | 614.5 ± 448.0 | .75 | 612.2 ± 486.6 | 589.8 ± 450.7 | .62 |
| Self-reported neighborhood safety | .05 | .02 | ||||
| Strongly agree | 13.5% | 19.2% | 18.8% | 10.2% | ||
| Agree | 49.4% | 39.3% | 43.5% | 45.2% | ||
| Neutral | 14.1% | 13.9% | 14.3% | 12.9% | ||
| Disagree | 17.7% | 21.1% | 17.4% | 25.8% | ||
| Strongly disagree | 5.4% | 6.5% | 5.9% | 5.9% |
Data are mean ± SD or n (%).
a
History of CVD includes heart attack, stroke, coronary artery disease, congestive heart failure.
b
Crime includes murder, manslaughter, forcible rape, robbery, and aggravated assault.