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In order to safeguard the confidentiality of respondents at the highest level, some data are provided only under conditions of a restricted use contract between the researcher and the University of Michigan.

Requirements
	Process for obtaining restricted data
	Active contract holders

Frequently Asked Questions
	Obtaining the data
	Existing contract holders


Main Study Geographic Information Geocode Match File File Description Codebook File Documentation 1970-90 Census File 2000 Census File 2010 Census File Between-Wave Moves File File Description Codebook File Documentation Between-Wave Moves File Employer Geocode Match File File Description Codebook File Documentation Employer Geocode Match File County Level Identifiers File Description Variable list County Born/Grew Up: Head/Reference Person, Wife/Spouse or Partner, and Parents File Description Codebook Childbirth and Adoption History - County Born: Child File Description Codebook Administrative Linkages School Identifiers File Description Codebook Assisted Housing File Description Codebook Medicare Claims File Description Technical Paper Mortality File Description Codebook User Guide Ethnicity Head/Reference Person and Spouse/Partner File Description Variable list Childbirth and Adoption History: Child File Description Codebook Vehicle Make and Model File Description Codebook		Supplemental Studies Child Development Supplement School Identifiers File Description Codebook CDS I-III CCD/PSS CDS-2014 NCES School Code CDS-2014 IPEDS Child Reports of Sensitive Information File Description Codebook Transition into Adulthood Supplement School Identifiers File Description Codebook Criminal Justice Exposure File Description Variable list Urbanicity File Description Variable list Ethnicity File Description Variable list 2007 Hurricane Katrina Supplement File Description 2013 Family Rosters and Transfers Child's Month and Year of Birth File Description Codebook Place and Distance Codes File Description Codebook Distance Codes File Description Codebook 2014 Childhood Retrospective Circumstances Study File Description Codebook