Table 1.
Descriptive Statistics for Dependent and Independent Variables (N=108)
| Variable | Mean | SD | Minimum | Maximum |
|---|---|---|---|---|
| Average Waketime Cortisol nmol/L | 8.256 | 6.307 | 0.100 | 49.350 |
| Average Wake + 30 min. Cortisol nmol/L | 13.404 | 7.850 | 0.100 | 49.730 |
| Average Wake + 3 hr. Cortisol nmol/L | 7.523 | 5.739 | 0.100 | 48.760 |
| Average Wake + 8 hr. Cortisol nmol/L | 5.067 | 5.144 | 0.330 | 49.610 |
| Average Wake + 12 hr. Cortisol nmol/L | 3.488 | 3.942 | 0.170 | 28.480 |
| Average Bedtime Cortisol nmol/L | 3.425 | 5.549 | 0.040 | 49.870 |
| Cortisol Awakening Response | 5.407 | 7.302 | −18.210 | 22.760 |
| Time Since Waking | 6.420 | 6.210 | 0.000 | 23.080 |
| Sad Lonely Factor | 0.383 | 0.603 | 0.000 | 3.000 |
| Nervous Stress Factor | 0.760 | 0.661 | 0.000 | 3.000 |
| Loneliness Scale | 2.020 | 1.691 | 0.000 | 6.000 |
| Chronic Interpersonal Stress | 2.264 | 0.342 | 1.750 | 3.690 |
| Caffeine | 0.070 | 0.132 | 0.000 | 0.800 |
| Smoking | 0.030 | 0.104 | 0.000 | 0.690 |
| Age | 19.022 | 0.437 | 17.940 | 20.110 |
| Percentage | SD | N | ||
| Clinical Major Depression | 4.1% | 0.207 | 5 | |
| Oral Contraceptive Use | 23.1% | 0.435 | 28 | |
| Follicular Stage | 19.0% | 0.205 | 23 | |
| Male | 22.3% | 0.241 | 27 | |
| African American | 18.2% | 0.196 | 22 | |
| Hispanic | 5.8% | 0.063 | 7 | |
| Multiple/Other Race | 17.4% | 0.188 | 21 | |
Note: Raw cortisol values (nmol/L) are presented for descriptive purposes but log transformed values are used in all analyses