Table 1.
Descriptive characteristics of young people in the BASUS cohort across levels of cumulative sleep deprivation
| History of sleep deprivation | |||
|---|---|---|---|
| None (n = 2141) | Occasional (n = 533) | Chronic (n = 397) | |
| Baseline (Wave 4* or 5) | |||
| Female | 51% | 54% | 61% |
| Age (years), mean (SD) | 14.8 (0.7) | 14.8 (0.7) | 14.8 (0.7) |
| White ethnicity | 54% | 47% | 38% |
| Post-pubertal stage | 9% | 7% | 12% |
| High family income | 44% | 39% | 37% |
| Highest maternal education | 41% | 37% | 37% |
| Excellent/Good Health | 62% | 52% | 51% |
| BMI (Kg/m2), mean (SD) | 21.0 (4.0) | 20.9 (3.9) | 20.8 (3.8) |
| Sleep duration (hr), mean (SD) | 9.0 (0.8) | 8.2 (0.9) | 7.3 (0.8) |
| CESD score, mean (SD) | 15.2 (10.5) | 17.6 (11.0) | 18.4 (11.3) |
| Mid-point (Wave 6) | |||
| Sleep duration (hr), mean (SD) | 8.9 (0.8) | 7.9 (0.9) | 7.0 (0.7) |
| Follow-up (Wave 7) | |||
| Sleep duration (hr), mean (SD) | 8.9 (0.8) | 7.7 (0.9) | 7.1 (0.7) |
| CESD score, mean (SD) | 15.0 (10.4) | 18.2 (11.0) | 19.0 (11.9) |
| Depressed (CESD≥24) | 20% | 28% | 32% |
Data on imputed sample (n = 3071). *Data on BMI from Wave 4 only. BMI, body mass index (kg/m2); high family income was perceived as far above average/quite a bit above average relative to peers; CESD, Centre for Epidemiologic Studies Depression Scale score; Depressed (CESD≥24)