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** 7.2 DATA PREPARATION: METHOD II
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**********************************
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foreach w in a b c d e f g h {
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use "$dir/`w'_indresp", clear
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keep `w'_hidp `w'_pno `w'_ppno `w'_ivfio `w'_sex `w'_dvage `w'_jbstat `w'_mastat_dv
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// Create within-household unique partnership identifier.
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gen `w'_partnum=cond(`w'_pno < `w'_ppno, `w'_pno, `w'_ppno) if `w'_ppno>0
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lab var `w'_partnum "Partnership identifier, within household"
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// Drop cases who are single or partner/spouse is not present in HH.
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drop if `w'_ppno<=0
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// Count the number of respondents for each partnership ID
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// Those with non-responding spouses will have `w'_numinpart=1.
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bysort `w'_hidp `w'_partnum: egen `w'_numinpart = sum(`w'_ppno > 0)
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label variable `w'_numinpart "# respondents from partnership (max 2)"
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tab `w'_numinpart
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sort `w'_hidp `w'_partnum `w'_pno
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list `w'_hidp `w'_partnum `w'_pno `w'_ppno `w'_numinpart in 1/50, sepby(`w'_hidp)
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// Keep only matched cases, that is, where both partners are present in the HH
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// and both are respondents.
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keep if `w'_numinpart==2
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// Assign spouse variable values
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bysort `w'_hidp `w'_partnum: ge sp_`w'_dvage=cond(_n==2,`w'_dvage[1],`w'_dvage[2],.) ///
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if `w'_partnum<.
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lab val sp_`w'_dvage `w'_dvage
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foreach v in `w'_sex `w'_mastat_dv `w'_jbstat {
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bysort `w'_hidp `w'_partnum: ge sp_`v' = cond(_n==2, `v'[1], `v'[2], .) ///
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if `w'_partnum < .
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lab val sp_`v' `v'
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}
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rename `w'_* *
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g wave=strpos("abcdefgh","`w'")
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save `w'_couples, replace
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}
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