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Final Data Release File Updates

This section summarizes updates to the CDS-2014 data files that occurred between the initial final release in February 2017 and the final release in December 2017.

Primary Caregiver Child (PCG-Child) Interview

Child’s age at the time of the PCG-Child interview has been added (P14AGEX).

Z-	scores for children’s height, weight, and body mass index (P14HGTZ, P14WGTZ, P14BMIZ) have been updated using child’s age at the time of the PCG-Child interview (P14AGEX). In the initial final public release, z-scores were computed based on the child’s age at the time of the screening interview.

Primary Caregiver Household (PCG-HH) Interview

The Primary Caregiver-Household (PCG-HH) file includes 2,517 records in the updated final data release. Eight duplicate records included in the initial final public release have been removed.

A caregiver-level probability weight has been constructed to support research questions where the primary caregiver is the unit of analysis (H14PCGWGT).

The primary caregiver’s calculated age in months (H14IWAGE) and years (H14AGEX) have been added.

The CDS household identifier (CDSHID) no longer uniquely identifies primary caregivers. CDSHID was created to allow users to merge information between the PCG-HH file and any child-level file. In the initial final public release file, CDSHID took a unique value for each record on the PCG-HH file. With the introduction of the Household Roster file, the functionality of the CDS household identifier has changed. A small set of households includes two primary caregivers.  That is, multiple CDS child participants reside in the same physical household but do not share the same primary caregiver. In the updated final release, all children and primary caregivers in the same physical household share the same CDS household identifier (2,517 primary caregivers and 2,506 unique values of CDSHID). To distinguish primary caregivers residing in the same household, the primary caregiver’s sequence number in the CDS-2014 household roster (H14INST) and position among the total number of caregivers in the household (H14CDSHPIN) have been added.

Child Interview

Child age in years at the time of the Child Interview (C14AGEX) and duration of the interactive voice response interview (C14IVRDX) have been added.

Household Roster File

The CDS-2014 Household Roster File was released for the first time as part of the final data release in December 2017. The roster includes information on all individuals living in a CDS child’s household at the time of the CDS-2014 initial screening interview. A description of this file appears in the previous subsection.

Demographic File

Information on the age, sex, and relationship to CDS child of all household members present at the time of the CDS-2014 screening interview has been added to the Demographic File (variables listed from X14R01SEX to X14R15UNC2). A CDS child’s position in the roster is reported in X14WHICH. The primary caregiver’s relationship to a CDS child is described in X14PCGRLSP.

Time Diary

All time diary data files (activity, aggregated activity, and questionnaire) are unchanged from the initial final public release.