Table 1:
Participant Demographics, Clinical, and Actigraphy Variables (N=164)
| Demographics | Mean (Standard Deviation) | |
|---|---|---|
| Age (years) (range 22-64) | 45.6 ( 9.5) | |
| n | % | |
| Gender | ||
| Male | 115 | 70.1 |
| Female | 49 | 29.9 |
| Race | ||
| Black / African American | 78 | 47.6 |
| White | 72 | 43.9 |
| Other | 9 | 5.4 |
| Unknown | 6 | 3.7 |
| Ethnicity | ||
| Non-Hispanic | 157 | 95.7 |
| Hispanic | 5 | 3.0 |
| Missing | 2 | 1.2 |
| PTSD (Current) | ||
| Yes | 27 | 16.5 |
| No | 126 | 76.8 |
| Missing | 11 | 6.7 |
| PTSD (Ever - lifetime) | ||
| Yes | 40 | 24.4 |
| No | 113 | 68.9 |
| Missing | 11 | 6.7 |
| Anxiety Disorders (SCID-I) | ||
| 0 | 74 | 45.1 |
| 1 | 52 | 31.7 |
| 2 | 15 | 9.1 |
| 3+ | 12 | 7.3 |
| Missing | 11 | 6.7 |
| Mood Disorders (SCID-I) | ||
| 0 | 64 | 39.0 |
| 1 | 76 | 46.3 |
| 2 | 13 | 7.9 |
| Missing | 11 | 6.7 |
| Clinical Variables | Mean (Standard Deviation) | |
| Alcohol Dependence Scale (n=150, range 1-37) | 20.0 ( 7.0) | |
| Number of drinking days (n=153, range 7-90) | 72.0 ( 22.0) | |
| Average drinks per day (n=153, range 3-27) | 13.2 ( 5.7) | |
| Maximum CIWA Days 1-4 (n=153, range 0-26) | 8.0 ( 6.0) | |
| Baseline Anxiety - BSA (n=161, range 0-32) | 11.0 ( 7.0) | |
| Baseline Depression - MADRS (n=161, range 0-42) | 16.0 ( 9.0) | |
| Actigraphy Variables (Week 1 averages)* (n=152) | Mean (Standard Deviation) | |
| Sleep efficiency (%) (range 20.7-90.6) | 75.8 ( 14.2) | |
| Duration (hours) (range 1.8-11.0) | 6.4 ( 2.0) | |
| Wake bouts (range 9.2-40.4) | 24.1 ( 10.2) | |
| Wake after sleep onset (minutes) (range 21.1-150.9) | 68.0 ( 38.9) | |
| Total sleep time (hours) (range 1.4-9.9) | 5.3 ( 1.8) | |
| Sleep-onset latency (minutes) (range 0-53.7) | 14.3 ( 23.1) | |
BSA, Brief Scale for Anxiety; CIWA, Clinical Institute Withdrawal Assessment; MADRS (Montgomery Asberg Depression Rating Scale; PTSD, post-traumatic stress disorder; SCID-I, Structured Clinical Interview for the DSM-IV.
*
On the inpatient unit, patients were required to be in their rooms by midnight Sunday through Thursday and by 1:00 am on weekend nights, but there was no official “lights out” policy.