Table 1.
Subject characteristics
| DW (n = 11) |
NW (n = 11) |
||||
|---|---|---|---|---|---|
| Mean | SD | Mean | SD | P | |
| Age, mean | 34.7 | 11.2 | 29.1 | 7.4 | <0.18 |
| Ethnicity | 8 C; 3 AA | 8 C; 2 AA; 1A | NA | ||
| BMI | 27.8 | 7.1 | 24.1 | 4.7 | <0.30 |
| Alcohol consumed, g/kg | 0.45 | 0.1 | 0.48 | 0.1 | <0.87 |
| Actigraphy | |||||
| Baseline | |||||
| Wake after sleep onset, min | 56.0 | 31.0 | 43.7 | 13.3 | <0.85 |
| Total sleep time, min | 373.7 | 66.2 | 374.3 | 67.9 | <0.22 |
| Fragmentation, % | 18.2 | 5.1 | 16.1 | 3.2 | <0.25 |
| After alcohol for 7 days | |||||
| Wake after sleep onset, min | 49.5 | 24.6 | 40.4 | 18.8 | <0.35 |
| Total sleep time, min | 360.1 | 41.6 | 374.3 | 58.1 | <0.44 |
| Fragmentation, % | 17.1 | 4.3 | 15.7 | 5.4 | <0.52 |
n, No. of subjects; C, Caucasian; AA, African American; A, Asian; DW, day shift worker; NW, night shift worker; BMI, body mass index; NA, not available.