Table 1: Characteristics of the nonoverweight and the overweight boys among study participants.

VariablesNonoverweight
( )
Overweight
( )
valuea

Age (years)12.0 (12.37)12.0 (12.39)0.594
Birthweight (g)
 <25006.08.9<0.001
 2500–299929.123.0
 3000–349945.738.1
 3500–399917.424.8
 4000+1.85.3
Only child (%)7.89.30.438
Parent's obesity (%)
 None69.541.2<0.001
 Father only20.932.3
 Mother only5.616.2
 Father and mother4.110.4
Exercise (%)
 None9.516.10.005
 Sometimes8.410.3
 Daily82.173.5
Sleeping hours (%)
 9.0+24.421.10.785
 8.0–8.953.555.4
 7.0–7.919.821.1
 <7.0 2.3 2.5
Skipping breakfast (%) 5.2 4.40.624
Snack after dinner (%)
 Seldom or none39.942.60.441
 Always or often60.157.4
Eating speed (%)
 Fast21.847.2<0.001
 Medium59.646.3
 Slow18.66.5
Eating until full (%)54.758.90.237

Except where indicated percentage (%), values are median (mean).
Chi-square test or Wilcoxon rank-sum test.