Updates and Changes to the Database

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.