Table 1.
Sample Characteristics, Mean (SD) or N (%).
| Black N=139 |
White N=105 |
Total N=244 |
|
|---|---|---|---|
| Adult Hollingshead score *** | 28.14 (13.8) | 34.10 (14.5) | 30.73 (14.4) |
| Family Hollingshead score: | |||
| At Age 7 *** | 32.10 (13.1) | 37.88 (11.3) | 34.60 (12.7) |
| At Age 16 *** | 37.49 (10.1) | 42.40 (10.7) | 39.60 (10.6) |
| Difference between age | |||
| 7 and 16 | 5.36 (13.7) | 4.31 (10.4) | 4.91 (12.3) |
| Age (years) * | 32.24 (1.0) | 31.99 (0.9) | 32.13 (1.0) |
| BMI m2/kg | 29.63 (7.4) | 28.96 (6.5) | 29.34 (7.0) |
| Waist-hip ratio | 0.92 (0.1) | 0.92 (0.1) | 0.92 (0.1) |
| Medications affecting sleep, yes * | 14 (10.1) | 23 (21.9) | 37 (15.2) |
| Current depressive symptoms | 4.51 (4.6) | 4.25 (4.4) | 4.40 (4.5) |
| Proportion days during sleep study: | |||
| Smoked | 0.53 (0.5) | 0.50 (0.5) | 0.52 (0.5) |
| Exercised | 0.23 (0.3) | 0.19 (0.3) | 0.22 (0.3) |
| Drank alcohol ** | 0.35 (0.3) | 0.23 (0.3) | 0.30 (0.3) |
| Used illegal drugs *** | 0.33 (0.4) | 0.09 (0.2) | 0.23 (0.4) |
| Daysleeper, N yes | 9 (6.5) | 9 (8.6) | 18 (7.4) |
| Night Shift Worker, N yes | 5 (3.6) | 4 (3.8) | 9 (3.7) |
| Early behavior problem group, N Positive | 73 (52.5) | 48 (45.7) | 121 (59.6) |
*
p<.05
**
p<.01
***
p<.001 race differences from t-tests and chi squares.