RAND Fat File For AHEAD 1995
(Ahead Wave 2, assigned to Wave 3 on RAND HRS Data)
====================================

The documentation for the RAND AHEAD 1995 Fat File is in
randff_a93-a95.pdf.  

The data files, provided in three formats, have been encrypted.  It is
important to copy these files to hard drive before unencrypting.  When the
corresponding *.zip file is double-clicked, select extract, select the
folder to store the files, and provide the proper pass-phrase.  A
subfolder will be created and the data files will be unzipped to that
folder (Target subfolder).  Please use WinZip V10 or higher to unzip
the file.  You can download WinZip from www.winzip.com.

Format          File                    Target subfolder
------		----			----------------
Sas V8          a95f2_Sas8.zip          Sas8\
Stata 8 SE      a95f2_Stata8SE.zip      Stata8SE\
Spss            a95f2_Spss.zip          Spss\

NOTE: all data files are sorted by HHIDPN and have 7027 observations.

==============================================================
There are two versions of the RAND fat file for HRS 1995.
One (a95f2a) has all the original AHEAD IDs in HHIDPN.
In the other (ad95f2a) the AHEAD-AHEAD overlap cases have been assigned
their most recent AHEAD IDs in HHIDPN.

ad95f2a will merge easily with the RAND HRS Data file.

The RAND fat files for AHEAD 1995 are stored as:

With original HRS IDs for overlap cases -
Sas8\a95f2a.sas7bdat 	= SAS V8 for Unix/PC
Stata8SE\a95f2a.dta	= Stata V8 SE
Spss\a95f2a.sav         = Spss

With AHEAD IDs for overlap cases -
Sas8\ad95f2a.sas7bdat 	= SAS V8 for Unix/PC
Stata8SE\ad95f2a.dta	= Stata V8 SE
Spss\ad95f2a.sav        = Spss

a95f2a.cont contains the SAS contents listing for the a95f2a SAS 
data set.

ad95f2a.cont contains the SAS contents listing for the ad95f2a SAS
data set.

=======================================================================
The RAND Income and Wealth Imputations are separate files, each stored in
several formats.  There are two versions of these files.  On one file, the
AHEAD-AHEAD overlap cases have been assigned their original AHEAD IDs in
HHIDPN.  On the other file, the AHEAD-AHEAD overlap cases have been
assigned their most recent AHEAD IDs in HHIDPN.

incf95f2 and wltf95f2 will merge easily with the RAND HRS Data file.

With original AHEAD IDs for overlap cases -

The files on the CD are:

Sas8\incm95f2.sas7bdat 	= SAS V8 for Unix/PC
Stata8SE\incm95f2.dta 	= Stata V8 SE
Spss\incm95f2.sav       = Spss

Sas8\wlth95f2.sas7bdat 	= SAS V8 for Unix/PC
Stata8SE\wlth95f2.dta 	= Stata V8 SE
Spss\wlth95f2.sav       = Spss

With most recent AHEAD IDs for overlap cases -

Sas8\incf95f2.sas7bdat  = SAS V8 for Unix/PC
Stata8SE\incf95f2.dta   = Stata V8 SE
Spss\incf95f2.sav       = Spss

Sas8\wltf95f2.sas7bdat  = SAS V8 for Unix/PC
Stata8SE\wltf95f2.dta   = Stata V8 SE
Spss\wltf95f2.sav       = Spss

see the randff_a93-a95.pdf file for a description of these files.

incm95f2.cont and wlth95f2.cont contain the SAS contents listings
for the incm95f2 and wlth95f2 SAS data sets.

incf95f2.cont and wltf95f2.cont contain the SAS contents listings
for the incf95f2 and wltf95f2 SAS data sets.

incm95f2.tabs and wlth95f2.tabs contain frequency tables and means of some
variables.

==============================================================
The following files provide SAS formats and the variables
assignments for them. They are in the Fmts\ subdirectory.

income.fmt	SAS formats (VALUE statements) for income
		imputation and received flags
wealth.fmt	SAS formats (VALUE statements) for wealth
		imputation and ownership flags

incwealth95.format  FORMAT statements mapping income and wealth
		imputation and ownership flags to SAS formats


========================================================================

The AHEAD data used for these files are:
   - AHEAD 1995, Version 2
   - Tracker V3.1

========================================================================
			
Readme last updated 6/2006.