Analysis weights were constructed in stages corresponding to
the stages of the sample design, accounting for the probability of
county selection and the probability of each child’s selection
within a county, given the youth’s county of residence. Weights
were further adjusted to account for population differences from
those expected on the frame, small deviations from the original
plan that occurred during sampling, and for nonresponse
patterns and replacement PSUs. The weighting process for
NSCAWII was more complex than for NSCAWI [14]. All analyses
presented utilized weighting in analyses. Nonweighted cell sizes
are presented for some analyses to provide detail about the
amount of data upon which analyses are based. All variables
were generated using these weights and can be inferred to the
U.S. child welfare population [14].