** This File created 4 March 2009, Paul Lambert, University of Stirling. 

*** Stata Conversion Syntax: ISCO88 categories as generated by CASOC 
**  (UK Occupational classification coding).

** CONVERTS CASOC STYLE STRING ISCO88'S TO NUMERIC FORMAT.

***** Explanation :  .
** CASOC is used by many major surveys, eg, BHPS. 
** It codes occupations into _string format_ ISCO88 categories. 
** Most of these strings are numeric, and may be converted to numeric 
**  format by a compute=number, or recode (convert) command. 
** However a small number of occupations are coded with -'s to indicate 
** uncertain group membership - eg, 122- is used for minor group 122, unit group unclear. 
** The syntax below converts relevant codings to conventional indicators in numbers.
** THESE STAY STRING FORMAT, though as the values are all now numbers, so they may easily be then converted to numeric, 
**    for instance by using "destring ajbisco, replace" 
***********.


capture program drop iscoca 
program define iscoca 
version 8 
syntax , isco(varname)

replace `isco'="1220" if (`isco' == "122-")
replace `isco'="1310" if (`isco' == "131-")
replace `isco'="2000" if (`isco' == "2---")
replace `isco'="8270" if (`isco' == "827-")
replace `isco'="8280" if (`isco' == "828-")
replace `isco'="3110" if (`isco' == "311-")
replace `isco'="7310" if (`isco' == "713-")
replace `isco'="8120" if (`isco' == "812-")
replace `isco'="8150" if (`isco' == "815-")
replace `isco'="8220" if (`isco' == "822-")
replace `isco'="2140" if (`isco' == "214-")
replace `isco'="7400" if (`isco' == "74--")

end 


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