Table 1: Factor loadings and factor score coefficients (derived from the principal components analysis) for 11 variables comprising the behavioral problems index, US children aged 6–17 years: the 2007 National Survey of Children's Health.

VariableAll races
Total population
Non-Hisp.
White
Non-Hisp.
Black
HispanicAsianMixed or
multiple race
ImmigrantsNative
born
Factor
loadings
Factor score
coefficients
Factor
loadings
Factor
loadings
Factor
loadings
Factor
loadings
Factor
loadings
Factor
loadings
Factor
loadings

Child argues too much0.610.160.600.610.600.520.630.580.61
Child bullies or is cruel or mean to others0.610.160.600.660.620.520.620.580.62
Child does not show respect for teachers and neighbors0.520.140.520.570.450.450.560.420.53
Child does not get along with other children0.600.160.600.630.540.500.600.520.60
Child is disobedient0.610.160.610.610.620.630.620.600.61
Child is stubborn, sullen, or irritable0.630.170.630.640.650.640.640.640.63
Child does not try to understand other people's feelings0.590.160.610.570.500.590.610.530.60
Child does not try to resolve conflicts with classmates/family/friends0.520.140.560.480.410.450.540.460.53
Child feels worthless or inferior0.570.150.590.540.540.540.610.540.58
Child is unhappy, sad, or depressed0.610.160.610.610.630.570.640.600.61
Child is withdrawn and does not get involved with others0.510.140.530.500.490.430.550.490.52

Proportion of total variance explained by factor0.340.350.340.310.290.370.300.34
Cronbach's alpha (reliability coefficient)0.800.810.810.770.750.830.760.81
Sample size (N) 62,80443,3286,2817,0251,3982,7297,69555,109

Each variable is a 5-category item with response codes 1 (never), 2 (rarely), 3 (sometimes), 4 (usually), and 5 (always).