Table 1:
Summary of Sample Characteristics (N = 738)
| Mean (SD) or Percentage | ||
|---|---|---|
| Sociodemographics | ||
| Age (years) | 55.4 (16.2) | |
| Male | 22% | |
| African American | 98% | |
| Household income per capita (in $1000s) | 13.0 (12.6) | |
| Any children in home | 28% | |
| Neighborhood Hill District | 65% | |
| Taking any sleep medications | 17% | |
| Health indicators | ||
| Body mass index | 31.2 (7.4) | |
| Psychological distress | 4.3 (4.6) | |
| Physical functioning | 65.9 (28.8) | |
| Sleep Measures | % “Good” range | |
| Regularity | 62% | |
| Satisfaction | 44% | |
| Timing (sleep period midpoint) | 64% | |
| Sleep Efficiency (in %) | 37% | |
| Duration (in hours) | 41% | |
Notes: Regularity= standard deviation of sleep duration in hours; Timing = sleep period midpoint; Sleep Efficiency = hours asleep/hours in bed; Duration = Total sleep time in hours
a
Satisfaction is measured on a response scale 1–5 in daily diaries. All the other sleep variables were assessed via actigraphy data.