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unicon_recnum: Unicon unique person record, 1973-1993

Description

unicon_recnum is a unique person record identifer used to link the EPI extracts to the Unicon source data variable recnum.

Availability

Sample Years
Basic 1976 - 1993
May 1973 - 1981
ORG 1979 - 1993

Code

Variable creation 
********************************************************************************
* Unicon record number
********************************************************************************
gen byte unicon_recnum = .

if $monthlycps == 1 | $maycps == 1 {
    if tm(1973m1) <= $date & $date <= tm(1993m12) {
        replace unicon_recnum = recnum
        duplicates report unicon_recnum
        assert r(unique_value) == r(N)
    }
    if tm(1994m1) <= $date {
        * not available
    }
}

lab var unicon_recnum "Unicon unique person record, 1973-1993"
notes unicon_recnum: 1973-1993: Unicon: recnum
notes unicon_recnum: Used for joining EPI extracts to Unicon data