Table 1.
Descriptive statistics for sample (N = 1,229)
| Mean (SEM) |
% |
||||
|---|---|---|---|---|---|
| Variable | Men | Women | Men | Women | t or χ2 value |
| Age | 57.9 (0.5) | 56.9 (0.4) | 1.49 | ||
| Race (% nonwhite) | 17.5 | 24.4 | 8.72** | ||
| Education (% HS grad or GED) | 24.0 | 31.0 | 7.48** | ||
| PSQI global score | 5.7 (0.2) | 6.6 (0.1) | 4.03*** | ||
| Actigraphy (weekly average) | |||||
| Sleep duration (hours) | 5.9 (0.1) | 6.4 (0.1) | 4.42*** | ||
| Sleep latency (min) | 37.2 (2.7) | 27.9 (1.8) | 3.02** | ||
| Sleep efficiency (%) | 76.6 (0.9) | 80.9 (0.6) | 4.24*** | ||
| Positive relations with others | 39.5 (0.3) | 41.3 (0.3) | 4.44*** | ||
| Serum IL-6 (pg/mL) | 2.0 (1.0) | 2.2 (1.0) | 1.69# | ||
| Serum E-selectin (ng/mL) | 45.0 (1.0) | 41.4 (0.8) | 2.80** | ||
| CES-D | 6.5 (1.0) | 7.0 (1.0) | 1.21 | ||
| Marital status (% married) | 73.8 | 54.6 | 69.60*** | ||
| Smoking (% current smokers) | 16.5 | 13.7 | 10.13** | ||
| Alcohol (% nondrinkers) | 29.1 | 39.7 | 38.51*** | ||
| Exercise (%) | 77.9 | 75.5 | 0.99 | ||
| BMI (% >30) | 40.0 | 42.1 | 0.53 | ||
| Waist-hip ratio | 0.97 (0.0) | 0.84 (0.0) | 27.36*** | ||
| Medication (% yes) | |||||
| Blood pressure | 34.3 | 38.0 | 1.81 | ||
| Cholesterol | 35.2 | 22.2 | 26.24*** | ||
| Steroid | 4.1 | 18.2 | 58.12*** | ||
| Depression | 10.7 | 16.5 | 8.74** | ||
#
P < 0.10
**
P < 0.01
***
P < 0.001.