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/* Note: The data file produced will be at the individual level and cover all ages, irrespective of the variables requested.
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In this current version of the tool, it is not possible to select variables by wave - though you may edit the code below to do so. */
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/****************************************************************************************
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* Sample Code for your request: af6b0adb42e5462a83c8b77daec64a53 *
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*****************************************************************************************/
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clear all
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set more off
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// Replace "where" with the filepath of the working folder (where any temporary files created by this programme will be stored) eg: c:\ukhls\temp
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cd "where"
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// Replace "where" with the folderpath where the data has been downloaded and unzipped eg: c:\ukhls_data\UKDA-6614-stata\stata\stata13_se\ukhls
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global ukhls "where\UKDA-6614-stata\stata\stata13_se\ukhls"
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// Replace "where" with the filepath of the folder where you want to store the final dataset produced by this programme. eg: c:\ukhls\results
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global outputpath "where"
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// The file produced by this programme will be named as below. If you want to change the name do it here.
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local outputfilename "UKHLS_long_hij"
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// By default the data will be extracted from the waves whose letter prefixes are written below, and merged. If you want to a different selection of waves, make the change here
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local allWaves = "h i j"
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// These variables from the indall files will be included. These include some key variables as determined by us PLUS any variables requested by you.
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local indallvars "age_dv country ethn_dv gor_dv hhsize hidp mastat_dv nchild_dv pidp pno psnen01_lw psnen01_xw psnen91_lw psnen91_xw psnen99_lw psnen99_xw psnenub_lw psnenub_xw psnenui_lw psnenui_xw psnenus_lw psnenus_xw psu racel_dv sex_dv strata urban_dv"
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// These variables from the indresp files will be included. These include some key variables as determined by us PLUS any variables requested by you.
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local indvars "age_dv benbase4 country ethn_dv gor_dv hhsize hhtype_dv hidp ind5mus_lw ind5mus_xw indbd91_lw indbdub_lw indin01_lw indin01_xw indin91_lw indin91_xw indin99_lw indin99_xw indinub_lw indinub_xw indinui_lw indinui_xw indinus_lw indinus_xw indns91_lw indnsub_lw indpxub_lw indpxub_xw indpxui_lw indpxui_xw indpxus_lw indpxus_xw indscub_lw indscub_xw indscui_lw indscui_xw indscus_lw indscus_xw jbstat mastat_dv nchild_dv pidp pno psu racel_dv scghq1_dv sex_dv strata tenure_dv ukborn urban_dv"
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// These variables from the child files will be included. These include some key variables as determined by us PLUS any variables requested by you.
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local chvars "age_dv chddvub_lw chddvub_xw chddvui_lw chddvui_xw country gor_dv hhsize hidp pidp pno psnen01_lw psnen91_lw psnenub_lw psnenub_xw psnenui_lw psnenui_xw psnenus_lw psnenus_xw psu sex_dv strata urban_dv"
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// These variables from the hhresp files will be included. These include some key variables as determined by us PLUS any variables requested by you.
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local hhvars "country fihhmnnet1_dv gor_dv hhden01_xw hhden91_xw hhden99_xw hhdenub_xw hhdenui_xw hhdenus_xw hhsize hhtype_dv hidp ieqmoecd_dv nkids_dv psu strata tenure_dv urban_dv"
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// These variables from the youth files will be included. These include some key variables as determined by us PLUS any variables requested by you.
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local youthvars "age_dv country ethn_dv gor_dv hidp pidp pno psu racel_dv sex_dv strata urban_dv ythscub_xw ythscui_xw ythscus_xw"
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/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// Anything below this line should not be changed! Any changes to the selection of variables and waves, and location of folders, should be made above. //
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/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// this program returns all variable names with the wave prefix
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program define getVars, rclass
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version 14.0
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if ("`1'" != "") {
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local wavemyvars = " `1'"
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local wavemyvars = subinstr("`wavemyvars'"," "," `2'_",.)
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local wavemyvars = substr("`wavemyvars'",2,.)
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}
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else local wavemyvars = ""
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return local fixedVars "`wavemyvars'"
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end
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// this program to returns which variables exist in this wave
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program define getExistingVars, rclass
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version 14.0
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local all = ""
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foreach var in `1' {
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capture confirm variable `var'
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if !_rc {
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local all = "`all' `var'"
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}
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}
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return local existingVars "`all'"
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end
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//loop through each wave
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foreach wave in `allWaves' {
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// find the wave number
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local waveno=strpos("abcdefghijklmnopqrstuvwxyz","`wave'")
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// find the wave household vars
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getVars "`hhvars'" `wave'
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local wavehhvars = "`r(fixedVars)'"
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// find the wave individual vars
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getVars "`indvars'" `wave'
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local waveindvars = "`r(fixedVars)'"
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// find the wave all individual vars
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getVars "`indallvars'" `wave'
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local waveindallvars = "`r(fixedVars)'"
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// find the wave child vars
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getVars "`chvars'" `wave'
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local wavechvars = "`r(fixedVars)'"
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// find the wave youth vars
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getVars "`youthvars'" `wave'
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local waveyouthvars = "`r(fixedVars)'"
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// open the the household level file with the required variables
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use "$ukhls/`wave'_hhresp", clear
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getExistingVars "`wave'_hidp `wavehhvars'"
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keep `r(existingVars)'
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// if only household variables are required, skip this part and return all households
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if ("`indvars'" != "" || "`chvars'" != "" || "`youthvars'" != "") {
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// if any individual variable is required, first merge INDALL keeping the pipd (and possibly some default variables?), so that other files can merge on it.
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merge 1:m `wave'_hidp using "$ukhls/`wave'_indall"
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drop _merge
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// drop loose households with no individuals
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drop if (pidp == .)
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// keep only variables that were requested and exist in this wave
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getExistingVars "pidp `wave'_hidp `wavehhvars' `waveindallvars'"
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keep `r(existingVars)'
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// add any requested individual variables
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if ("`indvars'" != "") {
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merge 1:1 pidp using "$ukhls/`wave'_indresp"
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drop _merge
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// keep only variables that were requested and exist in this wave
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getExistingVars "pidp `wave'_hidp `wavehhvars' `waveindvars' `waveyouthvars' `wavechvars' `waveindallvars'"
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keep `r(existingVars)'
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}
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// add any requested youth variables
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if ("`waveyouthvars'" != "") {
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merge 1:1 pidp using "$ukhls/`wave'_youth"
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drop _merge
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// keep only variables that were requested and exist in this wave
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getExistingVars "pidp `wave'_hidp `wavehhvars' `waveindvars' `waveyouthvars' `wavechvars' `waveindallvars'"
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keep `r(existingVars)'
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}
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// add any requested child variables
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if ("`wavechvars'" != "") {
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merge 1:1 pidp using "$ukhls/`wave'_child"
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drop _merge
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// keep only variables that were requested and exist in this wave
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getExistingVars "pidp `wave'_hidp `wavehhvars' `waveindvars' `waveyouthvars' `wavechvars' `waveindallvars'"
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keep `r(existingVars)'
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}
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}
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// create a wave variable
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gen wavename=`waveno'
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// drop the wave prefix from all variables
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rename `wave'_* *
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// save the file that was created
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save temp_`wave', replace
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}
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// open the file for the first wave (wave a_)
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local firstWave = substr("`allWaves'", 1, 1)
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use temp_`firstWave', clear
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// loop through the remaining waves appending them in the long format
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local remainingWaves = substr("`allWaves'", 3, .)
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foreach w in `remainingWaves' {
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// append the files for the second wave onwards
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append using temp_`w'
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}
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// check how many observations are available from each wave
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tab wavename
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// move pidp to the beginning of the file
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order pidp, first
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// save the long file
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save "$outputpath/`outputfilename'", replace
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// erase temporary files
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foreach w in `allWaves' {
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erase temp_`w'.dta
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}
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$syntax;
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