Table 1.
Participant Demographics Separately by Group
| PTSD (n = 45) |
PI (n = 25) |
Controls (n = 27) |
|||||
|---|---|---|---|---|---|---|---|
| Variable | M or n | SD or % | M or n | SD or % | M or n | SD or % | Test |
| Age (years) | 35.00 | 9.14 | 32.28 | 7.24 | 32.15 | 7.54 | F = 1.38 |
| Women | 6 | 13.3 | 12 | 48.0 | 5 | 18.5 | χ2 = 11.2* |
| Hispanic/Latino | 13 | 28.9 | 3 | 12.0 | 6 | 22.2 | χ2 = 1.6 |
| Race | χ2 = 18.5* | ||||||
| Caucasian | 28 | 62.2 | 20 | 80.0 | 20 | 74.1 | |
| Asian | 1 | 2.2 | 0 | 0.0 | 5 | 18.5 | |
| Black/African American | 10 | 22.2 | 4 | 16.0 | 1 | 3.7 | |
| Hawaiian or Pacific Islander | 4 | 8.9 | 0 | 0.0 | 0 | 0.0 | |
| Multiple | 2 | 4.4 | 1 | 4.0 | 1 | 3.7 | |
| Education | χ2 = 32.5* | ||||||
| Partial high school | 2 | 4.4 | 0 | 0.0 | 0 | 0.0 | |
| High school graduate | 14 | 31.1 | 1 | 4.0 | 1 | 3.7 | |
| Partial college | 20 | 44.4 | 8 | 32.0 | 4 | 14.8 | |
| ≥College graduate | 9 | 20.0 | 16 | 64.0 | 22 | 81.5 | |
Note. PTSD = posttraumatic stress disorder; PI = primary insomnia.
*
p < .05.