Updates and Changes to the Database

March 2019
Download MIG170 again!

Unfortunately, MIG170 had a duplicate observation on community 167 household 86. If you downloaded the file in late February or early March, you may have two observations for the same migrant. You may just delete it yourself, or download that file again from the OPR server. The file was updated on March 18, 2019. We apologize for the inconvenience.

 

February 2019
The new MMP170 databases are here!

The Mexican Migration Project is pleased to make available to the public its new databases corresponding to the MMP170.

The MMP170 databases have 170 communities, which include the original 161 communities plus 9 new additional communities: 5 from Morelos, 2 from Yucatan, and 2 from Queretaro.

MMP170 has information on 27,274 Mexican households, 1,057 U.S. households, and individual-level data on 176,701 persons. These data contain information on 8,824 household heads with migration experience to the U.S. and information on 65 migrants to Canada.

What's new with the MMP170?

(1) Violence perception by the household head, by other HH member, and at the community level. These variables - from table R - are found in the HOUSE file. These questions are available for the new 9 communities (162+).

(2) Variables specific to migrants with temporary worker visas (H2). These variables - from tables S and T - are found in MIG, MIGOTHER, and CNMIG files. This set of questions started in 2018 and are available for the last two communities.

(3) CNMIG is not only for the household head, but also includes any other migrant with experience to Canada. Now this file has 65 observations.

(4) Starting in 2017, in the health variables, we now ask for the year of diagnosis if the person reported an illness. These variables are only for household head and spouses; variables can be found in PERS, MIG, and HOUSE.

(5) Starting in 2017, we added a column on tables Fa/Fb asking for schooling level. This variable was created with the goal to measure school reinsertion. This variable is in LIFE and SPOUSE respectively.

(6) COMMUN file has updated homicide rates for 2016 & 2017 at the municipio level.

Supplementary files - NATLYEAR and NATLHIST - have been updated. Codebooks and files may be found directly in our website.

Data are availble in the following formats: SAS, SPSS, Stata, and CSV through the OPR's archive. This release supersedes all earlier releases of the data.

Please email us citations to any books, journal articles, conference presentations, or working papers you have authored.

 

October 2015

The new MMP154 database is here!

The Mexican Migration Project is pleased to make available to the public its new database: MMP154.

The MMP154 database has 154 communities in 24 states, which includes the original 150 communities plus 4 new additional communities: 3 from Jalisco and 1 from Zacatecas.

MMP154 databases are available in: SAS, Stata, SPSS, and CSV format. To access the data please visit the OPR's archive webpage. Registration is required for access and download.

If you find any problems with the data, please report them to us by sending e-mail directly to mmp-lamp@princeton.edu, this truly help us to keep data as accurate as possible.

This release supersedes all earlier releases of the data.

 

July 2015

Download MMP150 - PERS and LIFE again.

Please download the PERS and LIFE files again. There were 4 duplicated observations in PERS that belonged to household heads. Consecuently, their life histories were duplicated in LIFE. Those household heads were non-migrants; only PERS and LIFE were affected by this issue.

 

May 2015

Download MMP150 - HOUSE file again.

There was an issue while merging previous dataset with the new files in HOUSE. Please download the file dated on May 12, 2015.

NATLHIST & NATLYEAR files have been updated.

Supplemental files at the national level - NATLHIST y NATLYEAR - have been updated. You may download them directly at our supplemental data page. They are available in SAS, SPSS, Stata, CSV, and Excel.

We have also uploaded the file with the prevalence ratios at the community level from 1940 up to the survey year. Files are available in SAS, SPSS, Stata, CSV, and Excel. This file can be located in our supplemental data page and its codebook can be found with all of our codebooks.

 

April 2015

The new MMP150 database is here!

The Mexican Migration Project is pleased to make available to the public its new database: MMP150.

The MMP150 database has 150 communities in 24 states, which includes the original 143 communities plus 7 new additional communities: 4 from Jalisco and 3 from Puebla.

MMP150 databases are available in: SAS, Stata, SPSS, and CSV format. To access the data please visit the OPR's archive webpage. Registration is required for access and download.

We will be updating both NATLYEAR and NATLHIST in the next month or so.

If you find any problems with the data, please report them to us by sending e-mail directly to mmp-lamp@princeton.edu, this truly help us to keep data as accurate as possible.

This release supersedes all earlier releases of the data.

 

July 2013

The new MMP143 database is here!

The Mexican Migration Project is pleased to make available to the public its new database: MMP143.

The MMP143 database has 143 communities in 24 states, which includes the original 134 communities plus 9 new additional communities: 5 from Queretaro and 4 from Tabasco.

MMP143 databases are available in: SAS, Stata, and SPSS format. To access the data please visit the OPR's archive webpage. Registration is required for access and download.

There was one modification on the MIG file. We observed some questinable quantities reported on the variables REMIT, SAVINGS, y SAVRETRN. Technically, nobody may return to Mexico with more than $10K on had. After analyzing quantities, we determined that the original quantities were reported in pesos and not in dollars. Thus, we only adjusted 2.9% of our observations to nominal dollars.

We were not able to update our supplementary files: NATLYEAR nor NATLHIST. We are still waiting for DHS to release their complete 2012 statistical yearbook and for the U.S. Census to release their most recent ACS 2012. We hope to update these two files by the end of the year.

If you find any problems with the data, please report them to us by sending e-mail directly to mmp@opr.princeton.edu, this truly help us to keep data as accurate as possible.

This release supersedes all earlier releases of the data.

 

April 2012

MIG134 - Download again!

Please download again MIG134. There were some missing observations last October that didn't make it into the file. MIG134 has 7,423 migrant household heads.

 

October 2011

The new MMP134 database is here!

The Mexican Migration Project is pleased to make available to the public its new database: MMP134.

The MMP134 database has 134 communities in 22 states, which includes the original 128 communities plus 6 new additional communities: 2 from San Luis Potosi, 3 from Puebla, and 1 from Guanajuato state.

MMP134 database is available in: SAS, Stata, and SPSS format. Instead of offering datasets by state, now we are offering the syntaxis to cut the dataset into states.

To access the data please visit the OPR's archive webpage. Registration is required for access.

We have also updated our supplementary datasets until year 2010: COMMUN, NATLYEAR and NATLHIST. In addition, we have added montly rain data until 2010 to our ENVIRONS dataset.

There was one modification on the MIG and MIGOTHER file. Originally, the variables RELTRIP, PAISTRIP, FINHELP, and LODGING were aimed to measure characteristics on the last trip only. However, in 2000, they were modified to measure characteristics on the first trip. Now in 2011, you'll find two sets of variables: ones designed for first trip and the latter designed for last trip. To understand this change, please visit the Documentation - Questionnaire section and revise our various versions through time.

If you find any problems with the data, please report them to us by sending e-mail directly to mmp@opr.princeton.edu, this truly help us to keep data as accurate as possible.

This release supersedes all earlier releases of the data.

 

November 2010

HOUSE128 - Download again

We discovered that HOUSE128 had a duplicate observation for commun 120 and household 37. Please download again HOUSE128 from the OPR archive or just delete that observation from your file before running your analysis.

 

March 2010

The new MMP128 database is here!

The Mexican Migration Project is pleased to make available to the public its new database: MMP128.

The MMP128 database has 128 communities in 22 states, which includes the original 124 communities plus 4 new additional communities from YUCATAN state.

MMP128 database is available in: SAS, Stata, and SPSS format. Instead of offering datasets by state, now we are offering the syntaxis to cut the dataset into states.

To access the data follow the "Databases/Data Files" link, which will lead you to the OPR's archive. Registration is required for access.

If you find any problems with the data, please report them to us by sending e-mail directly to mmp@opr.princeton.edu, this truly help us to keep data as accurate as possible.

This release supersedes all earlier releases of the data.