Standardizing and harmonizing variables in PACT/R datasets

PACT/R datasets include individual-level data from prospective studies of children exposed to acute, potentially traumatic events.

When data are contributed to the Archive, the PACT/R team works with contributing investigators to apply standard variable names and values for many common variables.

  • Study information - study location, study group
  • Demographic characteristics
  • Trauma & event characteristics
  • Medical care and physiological measures
  • Trauma history variables

Child trauma studies use a variety of different measures to assess traumatic stress and other symptoms, as well as risk and protective factors and other covariates. To facilitate cross-study analyses, the PACT/R team develops harmonization algorithms based on expert consensus. We then apply these algorithms to data from each study, to derive harmonized common variables at the item and scale level.

Examples of harmonized variables:

  • acute traumatic stress symptom items assessed within the first 24 hours post-event
  • acute traumatic stress symptom items assessed within the first month post-event
  • posttraumatic stress outcomes assessed at least 3 months post-event

Download the PACT/R Data Dictionary for variable names and descriptions.