2019-12-16T16:43:36Z

2019-11-11T18:03:38Z

Ymtsai: Created page with "Recommendations for Using the CDS-2014 Weights In this section, we summarize our recommendations for using the CDS-2014 weights. Our basic recommendation is for data users t..."

Recommendations for Using the CDS-2014 Weights

In this section, we summarize our recommendations for using the CDS-2014 weights. Our basic recommendation is for data users to always use the provided weights in all of their analyses. In addition, we recommend that, when calculating standard errors, data users should wherever possible account for the clustering of the CDS-2014 data by family. Standard errors should reflect the fact that siblings are more likely to have similar outcomes and characteristics than children selected at random. Controlling for family-level clustering of siblings also provides an appropriate correction due to clustering of families by household or neighborhood and recognizes the fact that generally it is only possible to control for a single level of clustering. Furthermore, when analyses focus on a subset of children (from either the full sample or the in- home component), data users should use an appropriate “sub-population” adjustment. Clustering-corrected standard errors and sub-population commands are available in most standard statistical software (including SAS and Stata).

Main Child Weight (X14CHW GT). This weight should be used for all analyses in which the full sample of children in CDS-2014 are the focus of the analysis. This is the weight to use with data from the PCG Child Instrument or for data on children aged 12–17 years from the Child Instrument.

Child In-Home Weight (X14IHWGT). This weight should be used for all analyses in which the analysis focuses on measures available only in the in-home component of CDS-2014, which includes the following components: Child Interviews for children aged 8–11 years, the Woodcock-Johnson Tests of Achievement in reading and math, and the CDS Time Diaries.

PCG Weight (H14PCGWGT). This weight should be used for all analyses in which the sample of PCGs in CDS-2014 are the focus of the analysis. This is the weight to use with data from the PCG Household Instrument or for other data on PCGs.

Finally, if users have questions about whether their analyses should be weighted or unweighted or about how to reflect the sampling design in their calculation of parameter estimates and standard errors, they should consult with a survey statistician.

Summary of CDS-2014 Weights

2019-11-11T18:03:28Z

Ymtsai: Created page with "Summary of CDS-2014 Weights In Table 5.7 we list the CDS-2014 child weights and the PCG weight and present case counts and summary statistics. that the case count for the Mai..."

Summary of CDS-2014 Weights

In Table 5.7 we list the CDS-2014 child weights and the PCG weight and present case counts and summary statistics. that the case count for the Main Child Weight (4,333) is approximately twice the count for the Child In-Home Weight, reflecting the fact that approximately half of the CDS-2014 sample was selected for the in-home component. The mean weight for the Child In- Home Weight (28,241.22) is correspondingly about twice as large as the mean weight for the Main Child Weight (14,061.74), reflecting the fact that these two samples both weight to the same national population of children. Note also that the weighted total population from both CDS-2014 samples is approximately 61 million children, which is about 83 percent of the estimated U.S. population of children aged 0–17 years of 73 million in 2013. The PSID count is lower primarily because it excludes children in post-1997 immigrant families and includes only about half of children in the youngest and oldest single-year age groups.

The case count for the PCG weight is 2,517 and the mean weight is 14,018.62, which (by construction) is very similar to the mean for Main Child Weight (14,061.74). The weighted total population of PCGs in CDS-2014 is 35 million.