TABLE 1

Summary Statistics From the 2002 CDS of the PSID

ParameterAll (N = 1546)Male Subjects (n = 767)Female Subjects (n = 779)
Age, y14.3 (2.6)14.2 (2.6)14.4 (2.5)
BMI, kg/m223.0 (6.2)22.8 (6.0)23.2 (6.5)
BMI z score0.60 (1.15)0.61 (1.19)0.59 (1.10)
Time-diary sleep, weekday, h8.8 (1.6)8.9 (1.6)8.7 (1.7)
Time-diary sleep, weekend, h10.3 (2.0)10.3 (2.1)10.4 (2.0)
Time-diary sleep, weighted by day of week, h9.2 (1.4)9.3 (1.4)9.2 (1.4)
Self-reported sleep duration, h8.0 (1.7)8.1 (1.8)7.9 (1.6)
Difference between time-diary and self-reported sleep, h1.3 (1.9)1.2 (2.0)1.3 (1.9)
Television viewing, h2.2 (1.7)2.3 (1.7)2.2 (1.6)
Physical activity, h0.6 (0.9)0.8 (1.0)0.4 (0.8)
Video game/computer use, h0.9 (1.4)1.2 (1.6)0.5 (1.0)
Income, $1000s68.5 (93.7)65.2 (75.2)71.7 (108.9)
Head of household education, y12.9 (2.7)12.9 (2.6)12.8 (2.8)
Overweight, %212320
Race, %
    White464547
    Black424440
    Hispanic767
    Asian111
    Other334
  • Data are means (SD) except where noted.