Table 1.
Participant Characteristics (N = 1400)
| Mean (± SD) or n (%) |
Range | n | |
|---|---|---|---|
| Age at the Start of University | 18.65 (0.50) | 17.52, 21.97 | 1400 |
| Sex | 1400 | ||
| Male | 610 (43.6%) | ||
| Female | 790 (56.4%) | ||
| Race and Ethnicity | 1383 | ||
| NH white | 661 (47.8%) | ||
| NH Asian | 282 (20.4%) | ||
| NH black | 91 (6.6%) | ||
| Hispanic all races | 207 (15.0%) | ||
| Other | 142 (10.3%) | ||
| US resident status | 1399 | ||
| Non-US resident | 202 (14.4%) | ||
| US resident | 1197 (85.6%) | ||
| CTQ-SF total score | 33.27 (9.02) | 25, 101 | 855 |
| Baseline CES-D scale score | 11.90 (8.86) | 0, 52 | 1391 |
| Sleep Regularity Index | 74.55 (7.93) | 41.11, 94.58 | 998 |
| 24-hour sleep duration, hours | 7.46 (0.62) | 3.89, 9.42 | 998 |
| Global Pittsburgh Sleep Quality Index Score | 4.71 (2.11) | 0, 16 | 979 |
| CES-D scale score | 14.83 (9.69) | 0, 51 | 982 |
NH, non-Hispanic; CES-D, Center for Epidemiologic Studies Depression Scale; CTQ-SF, Childhood Trauma Questionnaire- Short Form. For the sleep regularity index and 24-hour sleep duration, Ns indicate the number of participants who completed ≥ 66% of their daily sleep diaries (71%). Possible ranges: CTQ-SF, 5–125; PSQI, 0–21; and CES-D, 0–60.