The first generation JHU PIRC trial consisted of two cohorts of children who participated in an evaluation of two universal, school-based preventive interventions spanning grades 1 & 2, beginning in the 1985-86 and 1986-87 school years, respectively. Data is available at the item and construct level from ages 6 (grade 1) to 19. For a brief overview of the first generation JHU PIRC trial, please read our First Generation Methods and Measures Section located in the data documentation. Data tables have been established so that researchers can see the assessments at the item and construct level over time. To see the data tables with variable names and labels, click here.
Tables with comparisons between samples with complete and missing data by year in terms of fall of first grade characteristics. Check out the new tables of first grade comparisons across all time points. Tables are in Adobe Acrobat format.
First Generation JHU PIRC Parallel Data Set: A file containing parallel items and constructs (items and constructs matched on a child's year in the study) for Cohorts 1 and 2 has been created. This file also contains data from the age 19-20 follow-up, or the Young Adult follow-up. To access the documentation for this file, go to the First Generation JHU PIRC Parallel Data Set Table of Contents .
A Young Adult Data Dictionary (variable names & descriptions) has been added to the site along with a list of the other items in the Young Adult data set. To see the Young Adult data dictionary, click here.
1st Generation Methods: Describes the study sample and measures used for the first generation trials.
1st Generation Data: Data tables for the first generation, which includes variable names and labels.
Parallel Data Menu: 1st Generation data tables for parallel items across cohorts 1 and 2. There is more information about the parallel items below.
Young Adult Data: Data tables for the first generation Young Adult Survey, which includes variable names and labels. Click here to check out the missing data patterns analysis
Young Adult Survey: A full copy of the Young Adult Survey that was used. This is a link to the measure, not the data. For the data, see above
For a brief overview of the second generation JHU PIRC Intervention trial, please read our Second Generation JHU PIRC Intervention Trial Methods & Measures Section. The second generation JHU PIRC trial consisted of a single cohort of children who participated in an evaluation of two universal, school-based preventive intervention trials in grade 1, beginning in the 1993-94 school year. Data has been collected at the item and construct level from ages 5 (kindergarten) to 18 (grade 12).
Click on first grade comparisons to see tables with comparisons between samples with complete and missing data by grade in terms of fall of first grade characteristics. Tables are in adobe acrobat.
For a description of the naming convention used in the middle school follow-up, click here.
2nd Generation Methods: Describes the study sample and measures used for the second generation trials.
2nd Generation Data: Data tables for the second generation, which includes variable names and labels.
National Death Index: List of variables collected
Department of Corrections: List of variables collected
Census: List of variables collected
To request data, please email our Data Manager, Scott Hubbard. Please note that a brief background proposal must be submitted and must be approved by the principal investigator before a data request can be filled.