Table 2-.
Descriptive characteristics of sample at baseline
| Percentage | N | ||||
|---|---|---|---|---|---|
| Gender | |||||
| Female | 67.6% | 5929 | |||
| Male | 32.4% | 2842 | |||
| Ethicity | |||||
| Black | 65.9% | 5780 | |||
| White | 34.1% | 2991 | |||
| Education | |||||
| High school diploma or less | 18.1% | 1584 | |||
| Trade school diploma to associates degree | 61.3% | 5374 | |||
| Bachelors degree | 14.4% | 1264 | |||
| Graduate degree or higher | 6.3% | 549 | |||
| Sleep hours | |||||
| 6 or less hours | 32.9% | 2890 | |||
| 7–8 hours | 62.1% | 5445 | |||
| 9 or more hours | 5.0% | 436 | |||
| Frequency of vigorous activities | |||||
| Never or rarely | 16.9% | 1481 | |||
| Less than once per week | 15.6% | 1368 | |||
| 1–2 times per week | 21.7% | 1899 | |||
| 3 times per week | 18.4% | 1614 | |||
| 4 times per week | 10.1% | 885 | |||
| 5 or more times per week | 17.4% | 1524 | |||
| Use alcohol currently | |||||
| No | 94.6% | 8294 | |||
| Yes | 5.4% | 477 | |||
| Continuous variables | |||||
| Mean | Median | Maximum | Minimum | SD | |
|---|---|---|---|---|---|
| Positive affect score* | 3.54 | 3.60 | 5.00 | 1.00 | 0.70 |
| Negative affect score* | 1.73 | 1.60 | 5.00 | 1.00 | 0.70 |
| Age, y | 61.7 | 61.0 | 106.0 | 35.0 | 13.2 |
| Interval between waves, y | 3.09 | 3.33 | 5.92 | 0.01 | 1.10 |
| BMI, kg/m2 | 27.13 | 26.40 | 72.62 | 15.33 | 5.68 |
| Energy (kcal/day) | 1891.6 | 1780.1 | 4492. | 501.8 | 734.2 |
| Trans fatty acids, g/day | 3.61 | 2.83 | 45.53 | 0.00 | 3.00 |
| Omega-3 fatty acids, g/day | 2.09 | 1.87 | 9.94 | 0.19 | 1.10 |
| Omega-6 fatty acids, g/day | 17.89 | 16.25 | 70.67 | 1.94 | 8.98 |
| Mediterranean diet score† | 4.38 | 4.00 | 9.00 | 0.00 | 1.83 |
Total n = 8,771.
*
Affect scales range from 1–5, 1 being very slightly or not at all and 5 being extremely.
†
Mediterranean diet scores range from 0 to 9 with higher scores suggesting greater compliance.