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Table 1 Descriptive characteristics of young people in the BASUS cohort across levels of cumulative sleep deprivation

From: Chronic sleep deprivation and gender-specific risk of depression in adolescents: a prospective population-based study

 

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%

  1. 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)