Data
Overview
The
MMP134 Database is the result of an ongoing multidisciplinary
study of Mexican Migration to the United States. It contains
data gathered since 1982 in surveys administered every year
in Mexico and the United States. After surveys are completed
in the field, the information contained therein is input into
computer format, coded, examined, and then separated into six
primary data files, each providing a unique perspective of
Mexican migrants, their families, and their experiences.
The MMP134 Database contains an initial file with general demographic
and migratory information for each member of a surveyed household
(PERS). More detailed information on each migratory experience
of all heads of household is presented in a second file (MIG). Starting with community 120, whenever the household head was not a U.S. migrant, the MMP started collecting information about another person in the household with U.S. migration experience (MIGOTHER).
Starting in 2005, the MMP is gathering detailed information on
migratory experience of all household heads who have migrated
Canada (CNMIG). More general characteristics of the household,
its members, and other holdings is reserved for a fourth file (HOUSE).
Lastly, detailed labor histories for each head of household and
each spouse complete the set of data files (LIFE and SPOUSE, respectively).
In addition to the six primary data files, supplementary data
files have been created to provide researchers with additional
information that may be useful in analyses of migration. For instance,
for all the communities surveyed by the Mexican Migration Project,
data at the community and municipio level have been collected
and compiled in the file: COMMUN.
Other two supplementary data files - NATLYEAR & NATLHIST - are available to you as well. These two dataset contain several variables that have been used by MMP researchers in the past to assess various factors contributing to migration between Mexico and the U.S.
Also, we are now offering a supplementary data file at the state
level, which contains detailed environmental data: ENVIRONS. Some
of the variables in this dataset are:
type of weather, land use and degradation, and historyc monthly
rain (from 1941 to 2004).
Data
Uses
In Addition to their
use in basic scientific research, data from the MMP have been
used by the following U.S. government agencies:
Department of Commerce:
Estimates of annual earnings and remittances of undocumented Mexican
Migrants.
General Accounting
Office:
Studies of the behavior of undocumented parents
of US-born children Assessments of border patrol efficacy.
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